arch: arm: Revert Krait cache line size setting back to 64

Additional changes are needed in LK to support cache line size of
128.  Revert Krait cache line setting back to 64 until all
issues are fixed.

Change-Id: I40d4be37469eae082399be032d1f5ae5ff321382
diff --git a/arch/arm/include/arch/defines.h b/arch/arm/include/arch/defines.h
index 7201fbf..825629b 100644
--- a/arch/arm/include/arch/defines.h
+++ b/arch/arm/include/arch/defines.h
@@ -32,9 +32,7 @@
  #define CACHE_LINE 32
 #elif defined(ARM_CPU_CORE_SCORPION)
  #define CACHE_LINE 32
-#elif defined(ARM_CPU_CORE_KRAIT)
- #define CACHE_LINE 128
-#elif defined(ARM_CPU_CORE_A7)
+#elif defined(ARM_CPU_CORE_KRAIT) || defined(ARM_CPU_CORE_A7)
  #define CACHE_LINE 64
 #else
  #error unknown cpu