FP2-272: Enable fastboot in all mode(user,userdebug,eng)

In default, in the user mode, the fastboot is disabled.
now it should enable fastboot in all mode(user,userdebug,eng).

user mode: TARGET_BUILD_VARIANT := user
userdebug mode: TARGET_BUILD_VARIANT :=userdebug
eng mode: TARGET_BUILD_VARIANT :=eng

Change-Id: I4e268fc6153f95376aa72a69d0566ae11710ad5b
1 file changed