initial brax3 device makefiles

* boots and works fine

Signed-off-by: erascape <erascape@proton.me>

overlay/system/etc/usb-moded/90-device-specific-config.ini

@@ -0,0 +1,6 @@
+[configfs]
+function_mtp      = ffs.mtp
+gadget_udc_device = musb-hdrc
+
+[udev]
+extcon_tracking = 1

overlay/system/etc/usb-moded/dyn-modes/mtp.ini.in

@@ -0,0 +1,9 @@
+[mode]
+name = mtp
+module = none
+appsync = 1 # Launches uMTP-Responder as needed
+
+[options]
+# sysfs_value = comma separated list of functions to enable in this mode
+sysfs_value = mtp
+idProduct = $IDPRODUCT_MTP

overlay/system/etc/usb-moded/dyn-modes/mtp_adb.ini.in

@@ -0,0 +1,13 @@
+[mode]
+name = mtp_adb
+module = none
+# Launches ADBD
+# Launches uMTP-Responder as needed
+appsync = 1
+
+[options]
+# sysfs_value = comma separated list of functions to enable in this mode
+sysfs_value = mtp,adb
+android_extra_sysfs_path =  /sys/class/android_usb/android0/f_ffs/aliases
+android_extra_sysfs_value = adb
+idProduct = $IDPRODUCT_MTP_ADB

overlay/system/etc/usb-moded/run/mtp-umtprd.ini

@@ -0,0 +1,5 @@
+[info]
+mode = mtp
+systemd = 1
+name = umtprd.service
+systemd_wait = 1

overlay/system/etc/usb-moded/run/mtp_adb-umtprd.ini

@@ -0,0 +1,5 @@
+[info]
+mode = mtp_adb
+systemd = 1
+name = umtprd.service
+systemd_wait = 1