[AArch64] big.LITTLE option rewriting bug

gcc/

	* config/aarch64/aarch64-elf.h (ASM_SPEC): Remove identity spec for
	-mcpu.

From-SVN: r206399

gcc/ChangeLog

+2014-01-07  James Greenhalgh  <james.greenhalgh@arm.com>
+
+	* config/aarch64/aarch64-elf.h (ASM_SPEC): Remove identity spec for
+	-mcpu.
+
 2014-01-07  Yufeng Zhang  <yufeng.zhang@arm.com>
 
 	* config/arm/arm.c (arm_expand_neon_args): Call expand_expr

gcc/config/aarch64/aarch64-elf.h

@@ -144,7 +144,6 @@
 #define ASM_SPEC "\
 %{mbig-endian:-EB} \
 %{mlittle-endian:-EL} \
-%{mcpu=*:-mcpu=%*} \
 %{march=*:-march=%*} \
 %(asm_cpu_spec)" \
 ASM_MABI_SPEC