hikey: Optimize for cortex-a53

* Enable specific libc routines
* Enable cortex-a53 compiler features and
  optimizations such as +crc and +crypto

Change-Id: Ib5c4be94bbc2fdac0814fb1a876a022633e8362d
diff --git a/BoardConfigCommon.mk b/BoardConfigCommon.mk
index a14e233..c0b14c5 100644
--- a/BoardConfigCommon.mk
+++ b/BoardConfigCommon.mk
@@ -1,15 +1,15 @@
 # Primary Arch
 TARGET_ARCH := arm64
 TARGET_ARCH_VARIANT := armv8-a
-TARGET_CPU_VARIANT := generic
 TARGET_CPU_ABI := arm64-v8a
+TARGET_CPU_VARIANT := cortex-a53
 
 # Secondary Arch
 TARGET_2ND_ARCH := arm
 TARGET_2ND_ARCH_VARIANT := armv7-a-neon
-TARGET_2ND_CPU_VARIANT := cortex-a15
 TARGET_2ND_CPU_ABI := armeabi-v7a
 TARGET_2ND_CPU_ABI2 := armeabi
+TARGET_2ND_CPU_VARIANT := cortex-a53
 
 TARGET_USES_64_BIT_BINDER := true
 TARGET_SUPPORTS_32_BIT_APPS := true