ARM: qcom_defconfig: enable MSM IOMMU for display

MSM IOMMU is required for apq8064 display, so enable it by default.
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: NAndy Gross <andy.gross@linaro.org>

arch/arm/configs/qcom_defconfig

@@ -201,6 +201,7 @@ CONFIG_MSM_LCC_8960=y
 CONFIG_MDM_LCC_9615=y
 CONFIG_MSM_MMCC_8960=y
 CONFIG_MSM_MMCC_8974=y
+CONFIG_MSM_IOMMU=y
 CONFIG_HWSPINLOCK=y
 CONFIG_HWSPINLOCK_QCOM=y
 CONFIG_REMOTEPROC=y