ARM: msm: Don't compile __msm_ioremap_caller() unless used

This function is only used on MSM7x00A so only compile the
function if the build includes support for that platform.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: David Brown <davidb@codeaurora.org>
diff --git a/arch/arm/mach-msm/io.c b/arch/arm/mach-msm/io.c
index 3dc04cc..4a1a222 100644
--- a/arch/arm/mach-msm/io.c
+++ b/arch/arm/mach-msm/io.c
@@ -168,6 +168,7 @@
 }
 #endif /* CONFIG_ARCH_MSM7X30 */
 
+#ifdef CONFIG_ARCH_MSM7X00A
 void __iomem *__msm_ioremap_caller(phys_addr_t phys_addr, size_t size,
 				   unsigned int mtype, void *caller)
 {
@@ -182,3 +183,4 @@
 
 	return __arm_ioremap_caller(phys_addr, size, mtype, caller);
 }
+#endif