media: rc: improve LIRC documentation

Add documentation for enum rc_proto and struct lirc_scancode
at the generated docs.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sean Young <sean@mess.org>

Documentation/userspace-api/media/rc/lirc-dev-intro.rst

@@ -57,12 +57,12 @@ on the following table.
 
     This mode is for both sending and receiving IR.
 
-    For transmitting (aka sending), create a ``struct lirc_scancode`` with
+    For transmitting (aka sending), create a struct lirc_scancode with
     the desired scancode set in the ``scancode`` member, :c:type:`rc_proto`
     set to the :ref:`IR protocol <Remote_controllers_Protocols>`, and all other
     members set to 0. Write this struct to the lirc device.
 
-    For receiving, you read ``struct lirc_scancode`` from the LIRC device.
+    For receiving, you read struct lirc_scancode from the LIRC device.
     The ``scancode`` field is set to the received scancode and the
     :ref:`IR protocol <Remote_controllers_Protocols>` is set in
     :c:type:`rc_proto`. If the scancode maps to a valid key code, this is set
@@ -136,6 +136,13 @@ on the following table.
 
     This mode is used only for IR send.
 
+*************************************
+Data types used by LIRC_MODE_SCANCODE
+*************************************
+
+.. kernel-doc:: include/uapi/linux/lirc.h
+    :identifiers: lirc_scancode rc_proto
+
 ********************
 BPF based IR decoder
 ********************

include/uapi/linux/lirc.h

@@ -139,7 +139,7 @@
  */
 #define LIRC_GET_REC_TIMEOUT	       _IOR('i', 0x00000024, __u32)
 
-/*
+/**
  * struct lirc_scancode - decoded scancode with protocol for use with
  *	LIRC_MODE_SCANCODE
  *