fix build error with midi, use usbd_edpt_xfer/busy for midi to replace dcd_*

examples/device/cdc_msc_hid/src/tusb_config.h

@@ -95,6 +95,9 @@
 // Should be sufficient to hold ID (if any) + Data
 #define CFG_TUD_HID_BUFSIZE         16
 
+#define CFG_TUD_MIDI_RX_BUFSIZE     512
+#define CFG_TUD_MIDI_TX_BUFSIZE     512
+
 #ifdef __cplusplus
  }
 #endif

examples/rules.mk

@@ -13,6 +13,7 @@ SRC_C += \
 	src/class/msc/msc_device.c \
 	src/class/cdc/cdc_device.c \
 	src/class/hid/hid_device.c \
+	src/class/midi/midi_device.c \
 	src/tusb.c \
 	src/portable/$(VENDOR)/$(CHIP_FAMILY)/dcd_$(CHIP_FAMILY).c