FPIIM-120: lk bootloader is compiled for incorrect target

Add TARGET_BOOTLOADER_PLATFORM_OVERRIDE variable for overriding platform

Change-Id: I670c07ac94a4fedacd62cbae537001b99c6b0038
diff --git a/AndroidBoot.mk b/AndroidBoot.mk
index 7560a70..57709d9 100644
--- a/AndroidBoot.mk
+++ b/AndroidBoot.mk
@@ -27,11 +27,15 @@
   DEVICE_STATUS := DEFAULT_UNLOCK=true
 endif
 
+ifneq ($(strip $(TARGET_BOOTLOADER_PLATFORM_OVERRIDE)),)
+      BOOTLOADER_PLATFORM := $(TARGET_BOOTLOADER_PLATFORM_OVERRIDE)
+else
 ifeq ($(TARGET_BOARD_PLATFORM),msm8660)
 	BOOTLOADER_PLATFORM := msm8660_surf
 else
 	BOOTLOADER_PLATFORM := $(TARGET_BOARD_PLATFORM)
 endif
+endif
 
 ABOOT_OUT := $(TARGET_OUT_INTERMEDIATES)/ABOOT_OBJ
 $(ABOOT_OUT):