Add Atheros AR1111 support to the HAL.

This seems to probe/attach as an AR9485 and thus nothing else besides
adding the device id seems to be required.

ath0: <Atheros AR1111> mem 0xf4800000-0xf487ffff irq 19 at device 0.0 on pci5
ath0: [HT] enabling HT modes
ath0: [HT] enabling short-GI in 20MHz mode
ath0: [HT] 1 stream STBC receive enabled
ath0: [HT] 1 RX streams; 1 TX streams
ath0: AR9485 mac 576.1 RF5110 phy 1926.8
ath0: 2GHz radio: 0x0000; 5GHz radio: 0x0000

The NIC I have here is a 1 antenna, 2GHz only device.

Thankyou to Jim Thompson <jim@netgate.com> for the AR1111 NIC.

Tested:

* AR1111 (pretending not to be an AR9485, but failing miserably);
  STA mode with powersave.

Relnotes:	yes
Sponsored by:	Netgate

sys/contrib/dev/ath/ath_hal/ar9300/ar9300_attach.c

@@ -4113,6 +4113,8 @@ ar9300_probe(uint16_t vendorid, uint16_t devid)
         return "Qualcomm Atheros QCA955x";
     case AR9300_DEVID_QCA9565: /* Aphrodite */
          return "Qualcomm Atheros AR9565";
+    case AR9300_DEVID_AR1111_PCIE:
+         return "Atheros AR1111";
     default:
         return AH_NULL;
     }

sys/dev/ath/ath_hal/ah_devid.h

@@ -92,6 +92,7 @@
 #define	AR9300_DEVID_AR946X_PCIE	0x0034
 #define	AR9300_DEVID_AR9330		0x0035
 #define	AR9300_DEVID_QCA9565		0x0036
+#define	AR9300_DEVID_AR1111_PCIE	0x0037
 #define	AR9300_DEVID_QCA955X		0x0039
 
 #define	AR_SUBVENDOR_ID_NOG	0x0e11		/* No 11G subvendor ID */