defconfig: Disable DEVKMEM and DEVMEM

DEVKMEM and DEVMEM are debug configs, so disable DEVKMEM and
DEVMEM.

Change-Id: I9a194cab18229109d0691d85d4770bd2a3ad1ff6
Signed-off-by: Teng Fei Fan <tengfei@codeaurora.org>
diff --git a/arch/arm64/configs/msm8953-perf_defconfig b/arch/arm64/configs/msm8953-perf_defconfig
index 0ee964d..debc69b 100644
--- a/arch/arm64/configs/msm8953-perf_defconfig
+++ b/arch/arm64/configs/msm8953-perf_defconfig
@@ -293,6 +293,7 @@
 # CONFIG_SERIO_SERPORT is not set
 # CONFIG_VT is not set
 # CONFIG_LEGACY_PTYS is not set
+# CONFIG_DEVMEM is not set
 # CONFIG_DEVKMEM is not set
 CONFIG_SERIAL_MSM_HS=y
 CONFIG_SERIAL_MSM_SMD=y