Write aliases before ffs mount in recovery

This is necessary to support kernel changes
that allow for multiple ffs functions. Some
kernels require aliases in order to name
function instances before mount time.

Test: Reboot into recovery, verify adb works
Bug: 34070894
Change-Id: I8376304d92af9b3e8c734fdb8cc77f0dc8bc4850
(cherry picked from commit e66f861a7c)

etc/init.rc

@@ -30,6 +30,7 @@ on init
     write /proc/sys/vm/max_map_count 1000000
 
 on fs
+    write /sys/class/android_usb/android0/f_ffs/aliases adb
     mkdir /dev/usb-ffs 0770 shell shell
     mkdir /dev/usb-ffs/adb 0770 shell shell
     mount functionfs adb /dev/usb-ffs/adb uid=2000,gid=2000
@@ -37,7 +38,6 @@ on fs
     write /sys/class/android_usb/android0/enable 0
     write /sys/class/android_usb/android0/idVendor 18D1
     write /sys/class/android_usb/android0/idProduct D001
-    write /sys/class/android_usb/android0/f_ffs/aliases adb
     write /sys/class/android_usb/android0/functions adb
     write /sys/class/android_usb/android0/iManufacturer ${ro.product.manufacturer}
     write /sys/class/android_usb/android0/iProduct ${ro.product.model}