msm: 9615: include msm-specific ion header

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

Change-Id: I16ad3bb40a76e414881bbf41b789d7bbed07ccdd
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>
diff --git a/arch/arm/mach-msm/board-9615.c b/arch/arm/mach-msm/board-9615.c
index 4d203fe..e528b56 100644
--- a/arch/arm/mach-msm/board-9615.c
+++ b/arch/arm/mach-msm/board-9615.c
@@ -29,7 +29,7 @@
 #include <linux/power/ltc4088-charger.h>
 #include <linux/gpio.h>
 #include <linux/msm_tsens.h>
-#include <linux/ion.h>
+#include <linux/msm_ion.h>
 #include <linux/memory.h>
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>