kernel: remove DEVMEM and DEVKMEM from target's config

These options are handled by generic configuration

Targets that need these options should select KERNEL_DEVMEM
and/or KERNEL_DEVKMEM options on OpenWRT's config

Signed-off-by: Luis Araneda <luaraneda@gmail.com>

target/linux/at91/config-4.9

@@ -131,8 +131,6 @@ CONFIG_DEBUG_LL_INCLUDE="mach/debug-macro.S"
 CONFIG_DEBUG_USER=y
 CONFIG_DEFAULT_IOSCHED="noop"
 CONFIG_DEFAULT_NOOP=y
-CONFIG_DEVKMEM=y
-CONFIG_DEVMEM=y
 CONFIG_DEVTMPFS=y
 CONFIG_DEVTMPFS_MOUNT=y
 CONFIG_DMADEVICES=y

target/linux/gemini/config-4.14

@@ -130,7 +130,6 @@ CONFIG_DECOMPRESS_XZ=y
 CONFIG_DEFAULT_CFQ=y
 # CONFIG_DEFAULT_DEADLINE is not set
 CONFIG_DEFAULT_IOSCHED="cfq"
-CONFIG_DEVMEM=y
 CONFIG_DMADEVICES=y
 CONFIG_DMATEST=y
 CONFIG_DMA_ENGINE=y

target/linux/layerscape/armv8_32b/config-4.9

@@ -297,8 +297,6 @@ CONFIG_DETECT_HUNG_TASK=y
 # CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND is not set
 # CONFIG_DEVFREQ_GOV_USERSPACE is not set
 # CONFIG_DEVFREQ_THERMAL is not set
-CONFIG_DEVKMEM=y
-CONFIG_DEVMEM=y
 CONFIG_DEVTMPFS=y
 CONFIG_DEVTMPFS_MOUNT=y
 CONFIG_DMADEVICES=y

target/linux/layerscape/armv8_64b/config-4.9

@@ -322,8 +322,6 @@ CONFIG_DEFAULT_CFQ=y
 CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=120
 CONFIG_DEFAULT_IOSCHED="cfq"
 CONFIG_DETECT_HUNG_TASK=y
-CONFIG_DEVKMEM=y
-CONFIG_DEVMEM=y
 CONFIG_DEVTMPFS=y
 CONFIG_DEVTMPFS_MOUNT=y
 # CONFIG_DEV_DAX is not set

target/linux/oxnas/config-4.14

@@ -103,7 +103,6 @@ CONFIG_DECOMPRESS_XZ=y
 CONFIG_DEFAULT_CFQ=y
 # CONFIG_DEFAULT_DEADLINE is not set
 CONFIG_DEFAULT_IOSCHED="cfq"
-CONFIG_DEVMEM=y
 CONFIG_DEVTMPFS=y
 CONFIG_DEVTMPFS_MOUNT=y
 CONFIG_DMA_CMA=y