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
diff --git a/makefile b/makefile
index 4f8f53e..dd4675d 100644
--- a/makefile
+++ b/makefile
@@ -58,9 +58,9 @@
   CFLAGS += -D_SIGNED_KERNEL=1
 endif
 
-ifeq ($(TARGET_BUILD_VARIANT),user)
-  CFLAGS += -DDISABLE_FASTBOOT_CMDS=1
-endif
+#ifeq ($(TARGET_BUILD_VARIANT),user)
+#  CFLAGS += -DDISABLE_FASTBOOT_CMDS=1
+#endif
 
 # setup toolchain prefix
 TOOLCHAIN_PREFIX ?= arm-eabi-