ipq4018: add qcom-gcc-ipq4018 and dependencies into the build

* add the extres stuff into the build, I'm going to end up leveraging
  all of it

* include the qcom-gcc-ipq4018 driver which currently implements the hwreset
  side of the API.

Reviewed by: andrew, manu, imp
Differential Revision: https://reviews.freebsd.org/D32723

sys/arm/conf/std.qca

@@ -12,6 +12,15 @@ files 		"../qualcomm/std.ipq4018"
 device 		uart
 device 		uart_msm	# Qualcomm MSM UART driver
 
+# EXT_RESOURCES pseudo devices
+options 	EXT_RESOURCES
+device 		clk
+device 		phy
+device 		hwreset
+device 		nvmem
+device 		regulator
+device 		syscon
+
 # Random
 device 		qcom_rnd
 
@@ -28,6 +37,9 @@ device 		mpcore_timer
 # PSCI - SMC calls, needed for qualcomm SCM
 device 		psci
 
+# Clock/Reset provider
+device 		qcom_gcc_ipq4018
+
 options 	FDT
 
 # Disable CP14 work in DDB as TZ won't let us by default

sys/arm/qualcomm/qcom_gcc_ipq4018_clock.c

@@ -0,0 +1,82 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2021, Adrian Chadd <adrian@FreeBSD.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice unmodified, this list of conditions, and the following
+ *    disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Driver for Qualcomm IPQ4018 clock and reset device */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/malloc.h>
+#include <sys/module.h>
+#include <sys/sglist.h>
+#include <sys/random.h>
+#include <sys/stdatomic.h>
+#include <sys/mutex.h>
+
+#include <machine/bus.h>
+#include <machine/resource.h>
+#include <sys/bus.h>
+
+#include <dev/fdt/fdt_common.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include <dt-bindings/clock/qcom,gcc-ipq4019.h>
+
+#include <arm/qualcomm/qcom_gcc_ipq4018_var.h>
+
+
+/*
+ * Fixed frequency clock sources:
+ *
+ * P_XO - 48MHz
+ * sleep-clk - is really 32KHz, although older DTS have it as 32.768KHz
+ */
+
+/*
+ * PLL derived sources:
+ *
+ * P_FEPLL125 - 125MHz
+ * P_FEPLL125DLY - 125MHz
+ * P_FEPLL200 - 200MHz
+ * P_FEPLL500 - 500MHz
+ * P_FEPLLWCSS2G - TBD
+ * P_FEPLLWCSS5G - TBD
+ *
+ * Then there are two DDR PLLs which are treated/configured slightly
+ * differently:
+ *
+ * P_DDRPLLAPSS - TBD
+ * P_DDRPLLSDCC - TBD
+ */
+
+/*
+ * Interesting stuff in Linux whilst I reverse engineer + figure it out:
+ * /sys/kernel/debug/clk
+ */

sys/arm/qualcomm/std.ipq4018

@@ -6,4 +6,5 @@ arm/qualcomm/qcom_cpu_kpssv2.c		optional smp
 dev/qcom_rnd/qcom_rnd.c			optional qcom_rnd
 arm/qualcomm/qcom_gcc_ipq4018.c		optional qcom_gcc_ipq4018
 arm/qualcomm/qcom_gcc_ipq4018_reset.c	optional qcom_gcc_ipq4018
+arm/qualcomm/qcom_gcc_ipq4018_clock.c	optional qcom_gcc_ipq4018