[MIPS64] Enable mips64 clang

(cherry picked from commit 41ca4446370ba90e472e45a8897868855185a6c7)

Change-Id: I0b141c58c88fe86e3a59844f53acc9a0e0a5271c
diff --git a/core/clang/TARGET_mips.mk b/core/clang/TARGET_mips.mk
index 6f4c197..0107519 100644
--- a/core/clang/TARGET_mips.mk
+++ b/core/clang/TARGET_mips.mk
@@ -43,7 +43,7 @@
   $(CLANG_CONFIG_mips_TARGET_EXTRA_CFLAGS)
 
 $(clang_2nd_arch_prefix)CLANG_TARGET_GLOBAL_CPPFLAGS := \
-  $(call $(clang_2nd_arch_prefix)convert-to-clang-flags,$(clang_2nd_arch_prefix)$(TARGET_GLOBAL_CPPFLAGS)) \
+  $(call $(clang_2nd_arch_prefix)convert-to-clang-flags,$($(clang_2nd_arch_prefix)TARGET_GLOBAL_CPPFLAGS)) \
   $(CLANG_CONFIG_mips_TARGET_EXTRA_CPPFLAGS)
 
 $(clang_2nd_arch_prefix)CLANG_TARGET_GLOBAL_LDFLAGS := \
diff --git a/core/combo/TARGET_linux-mips64.mk b/core/combo/TARGET_linux-mips64.mk
index dfd19ef..e23978f 100644
--- a/core/combo/TARGET_linux-mips64.mk
+++ b/core/combo/TARGET_linux-mips64.mk
@@ -48,9 +48,6 @@
 $(error Unknown MIPS architecture variant: $(TARGET_ARCH_VARIANT))
 endif
 
-# TODO: Enable Clang when its mips64 prebuilt is added
-WITHOUT_TARGET_CLANG := true
-
 include $(TARGET_ARCH_SPECIFIC_MAKEFILE)
 include $(BUILD_SYSTEM)/combo/fdo.mk
 
diff --git a/target/board/generic_mips64/BoardConfig.mk b/target/board/generic_mips64/BoardConfig.mk
index 7452978..88a24a3 100644
--- a/target/board/generic_mips64/BoardConfig.mk
+++ b/target/board/generic_mips64/BoardConfig.mk
@@ -32,7 +32,7 @@
 ifeq (,$(TARGET_2ND_ARCH_VARIANT))
 TARGET_2ND_ARCH_VARIANT :=  mips32r2-fp
 endif
-TARGET_CPU_ABI  := mips
+TARGET_2ND_CPU_ABI  := mips
 
 # The emulator (qemu) uses the Goldfish devices
 HAVE_HTC_AUDIO_DRIVER := true