Use i686-linux-android-4.6 for x86 build

Change-Id: Ibbb0a899f147013503d6830bb93050c5ae588539
Author: "H.J. Lu" <hongjiu.lu@intel.com>

core/combo/TARGET_linux-x86.mk

@@ -25,7 +25,7 @@ endif
 # You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else
 ifeq ($(strip $(TARGET_TOOLS_PREFIX)),)
 TARGET_TOOLS_PREFIX := \
-	prebuilts/gcc/$(HOST_PREBUILT_TAG)/x86/i686-android-linux-4.4.3/bin/i686-android-linux-
+	prebuilts/gcc/$(HOST_PREBUILT_TAG)/x86/i686-linux-android-4.6/bin/i686-linux-android-
 endif
 
 TARGET_CC := $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX)

envsetup.sh

@@ -117,7 +117,7 @@ function setpaths()
     # The gcc toolchain does not exists for windows/cygwin. In this case, do not reference it.
     export ANDROID_EABI_TOOLCHAIN=
     case $(get_build_var TARGET_ARCH) in
-        x86) toolchaindir=x86/i686-android-linux-4.4.3/bin
+        x86) toolchaindir=x86/i686-linux-android-4.6/bin
             ;;
         arm|*) toolchaindir=arm/arm-linux-androideabi-4.6/bin
             ;;