drm/edid: split out edid_header_fix()

Give a name to the EDID header fixup instead of having an inline memcpy.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/c10c24b179e942548cd5d693d159bb0d12be4d26.1648752228.git.jani.nikula@intel.com

drivers/gpu/drm/drm_edid.c

@@ -1572,6 +1572,11 @@ static const u8 edid_header[] = {
 	0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00
 };
 
+static void edid_header_fix(void *edid)
+{
+	memcpy(edid, edid_header, sizeof(edid_header));
+}
+
 /**
  * drm_edid_header_is_valid - sanity check the header of the base EDID block
  * @raw_edid: pointer to raw base EDID block
@@ -1702,7 +1707,7 @@ bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid,
 			if (edid_corrupt)
 				*edid_corrupt = true;
 			DRM_DEBUG("Fixing EDID header, your hardware may be failing\n");
-			memcpy(raw_edid, edid_header, sizeof(edid_header));
+			edid_header_fix(raw_edid);
 		} else {
 			if (edid_corrupt)
 				*edid_corrupt = true;