Revert "AndroidBoot: Revert back to gcc 4.7 for lk"

This reverts commit e9c5f4b7fe4cbc7dfb4b5947365aeebac32de75d

Change-Id: I9227b33233d92807185c719cb6ee58e9fcfe81dd
diff --git a/AndroidBoot.mk b/AndroidBoot.mk
index 0cb6128..089c4d8 100644
--- a/AndroidBoot.mk
+++ b/AndroidBoot.mk
@@ -3,7 +3,7 @@
 ifndef 2ND_TARGET_GCC_VERSION
 CROSS_COMPILE := ../../../prebuilts/gcc/linux-x86/arm/arm-eabi-$(TARGET_GCC_VERSION)/bin/arm-eabi-
 else
-CROSS_COMPILE := ../../../prebuilts/gcc/linux-x86/arm/arm-eabi-4.7/bin/arm-eabi-
+CROSS_COMPILE := ../../../prebuilts/gcc/linux-x86/arm/arm-eabi-$(2ND_TARGET_GCC_VERSION)/bin/arm-eabi-
 endif
 
 # Set flags if we need to include security libs