msm: 8960: include msm-specific ion header

All msm_ion clients need to use <linux/msm_ion.h> instead of
<linux/ion.h>

Change-Id: I6d05f982b35cbfed70bdd36c3b09fa1b37c88dfe
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>
diff --git a/arch/arm/mach-msm/board-8960.c b/arch/arm/mach-msm/board-8960.c
index 2cd654c..547b724 100644
--- a/arch/arm/mach-msm/board-8960.c
+++ b/arch/arm/mach-msm/board-8960.c
@@ -77,7 +77,7 @@
 #endif
 
 #include <linux/smsc3503.h>
-#include <linux/ion.h>
+#include <linux/msm_ion.h>
 #include <mach/ion.h>
 #include <mach/mdm2.h>
 #include <mach/mdm-peripheral.h>