Meira updates for bluetooth and audio (#2731)

* Add audio output

* Update Miera to fix bluetooth issues, bootloader definition.

* Added keymap with audio example

* Cleanup Meira audio code

keyboards/meira/featherble/config.h

@@ -36,6 +36,10 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define LED_EN_PIN D2
 #define UNUSED_PINS
 
+#define QMK_SPEAKER B5
+#define B5_AUDIO
+#define AUDIO_VOICES
+
 #define CATERINA_BOOTLOADER
 
  

keyboards/meira/featherble/rules.mk

@@ -1,3 +1,3 @@
 BLUETOOTH_ENABLE = yes
 F_CPU = 8000000
-
+BLUETOOTH = AdafruitBLE