Enable Mediakeys for yiancar's 328p keyboards (#10476)

keyboards/barleycorn/keymaps/via/readme.md

@@ -1,3 +1 @@
 # Compile with this keymap to use VIA
-
-Sadly right now when using VIA, extrakeys is disabled. This means volume control will not work.

keyboards/barleycorn/keymaps/via/rules.mk

@@ -1,3 +1 @@
 VIA_ENABLE = yes
-MOUSEKEY_ENABLE = no
-EXTRAKEY_ENABLE = no

keyboards/gingham/keymaps/via/keymap.c

@@ -30,7 +30,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     KC_TRNS,  KC_TRNS,  KC_UP,    KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  RESET  ,
     KC_TRNS,  KC_LEFT,  KC_DOWN,  KC_RGHT,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,
     KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,
-    KC_TRNS,  KC_TRNS,  KC_TRNS,                                KC_TRNS,                                KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS),
+    KC_VOLU,  KC_VOLD,  KC_MUTE,                                KC_TRNS,                                KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS),
 
 [2] = LAYOUT_60_iso_split_bs_rshift( /* Empty for dynamic keymaps */
     KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS, KC_TRNS,

keyboards/gingham/keymaps/via/readme.md

@@ -1,3 +1 @@
 # Compile with this keymap to use VIA
-
-Sadly right now when using VIA, extrakeys is disabled. This means volume control will not work.

keyboards/gingham/keymaps/via/rules.mk

@@ -1,3 +1 @@
 VIA_ENABLE = yes
-MOUSEKEY_ENABLE = no
-EXTRAKEY_ENABLE = no