ARM: imx6q: build pm code only when CONFIG_PM selected

Signed-off-by: Eric Miao <eric.miao@linaro.org>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
diff --git a/arch/arm/mach-imx/head-v7.S b/arch/arm/mach-imx/head-v7.S
index 6229efb..a59cae7 100644
--- a/arch/arm/mach-imx/head-v7.S
+++ b/arch/arm/mach-imx/head-v7.S
@@ -71,6 +71,7 @@
 ENDPROC(v7_secondary_startup)
 #endif
 
+#ifdef CONFIG_PM
 /*
  * The following code is located into the .data section.  This is to
  * allow phys_l2x0_saved_regs to be accessed with a relative load
@@ -97,3 +98,4 @@
 	.globl	phys_l2x0_saved_regs
 phys_l2x0_saved_regs:
         .long   0
+#endif