Fix defface's with no customization data

* lisp/net/shr.el (shr-h4, shr-h5, shr-h6):
* lisp/cedet/semantic/decorate/include.el
(semantic-decoration-on-includes):
* lisp/progmodes/make-mode.el (makefile-shell):
* lisp/time.el (display-time-date-and-time):
* lisp/nxml/nxml-mode.el (nxml-text, nxml-delimiter)
(nxml-element-colon): Add face definitions (bug#64655).

lisp/cedet/semantic/decorate/include.el

@@ -48,7 +48,7 @@
 ;;; Includes that are in a happy state!
 ;;
 (defface semantic-decoration-on-includes
-  nil
+  '((t (:inherit default)))
   "Overlay Face used on includes that are not in some other state.
 Used by the decoration style: `semantic-decoration-on-includes'."
   :group 'semantic-faces)

lisp/net/shr.el

@@ -217,14 +217,17 @@ temporarily blinks with this face."
   :version "28.1")
 
 (defface shr-h4 nil
+  '((t (:inherit default)))
   "Face for <h4> elements."
   :version "28.1")
 
 (defface shr-h5 nil
+  '((t (:inherit default)))
   "Face for <h5> elements."
   :version "28.1")
 
 (defface shr-h6 nil
+  '((t (:inherit default)))
   "Face for <h6> elements."
   :version "28.1")
 

lisp/nxml/nxml-mode.el

@@ -151,15 +151,15 @@ This is not used directly, but only via inheritance by other faces."
 This is not used directly, but only via inheritance by other faces."
   :group 'nxml-faces)
 
-(defface nxml-delimiter
-  nil
-  "Face used to highlight delimiters.
-This is not used directly, but only via inheritance by other faces."
+(defface nxml-text
+  '((t (:inherit default)))
+  "Face used to highlight text."
   :group 'nxml-faces)
 
-(defface nxml-text
-  nil
-  "Face used to highlight text."
+(defface nxml-delimiter
+  '((t (:inherit nxml-text)))
+  "Face used to highlight delimiters.
+This is not used directly, but only via inheritance by other faces."
   :group 'nxml-faces)
 
 (defface nxml-processing-instruction-delimiter
@@ -230,7 +230,7 @@ This includes the `x' in hex references."
   :group 'nxml-faces)
 
 (defface nxml-element-colon
-  nil
+  '((t (:inherit nxml-delimiter)))
   "Face used for the colon in element names."
   :group 'nxml-faces)
 

lisp/progmodes/make-mode.el

@@ -105,7 +105,7 @@
   :version "22.1")
 
 (defface makefile-shell
-  ()
+  '((t (:inherit default)))
   ;;'((((class color) (min-colors 88) (background light)) (:background  "seashell1"))
   ;;  (((class color) (min-colors 88) (background dark)) (:background  "seashell4")))
   "Face to use for additionally highlighting Shell commands in Font-Lock mode."

lisp/time.el

@@ -141,6 +141,7 @@ make the mail indicator stand out on a color display."
 
 (defface display-time-date-and-time nil
   "Face for `display-time-format'."
+  '((t (:inherit mode-line)))
   :group 'mode-line-faces
   :version "30.1")