ARM: rockchip_defconfig: remove CONFIG_ANDROID_LOW_MEMORY_KILLER

e8f5f841b764 ("remove CONFIG_ANDROID_LOW_MEMORY_KILLER requirement")

Kernel configuration options should include either
CONFIG_ANDROID_LOW_MEMORY_KILLER for in-kernel lowmemorykiller driver
to be used or a combination of CONFIG_MEMCG and CONFIG_MEMCG_SWAP
if userspace lmkd is preferred. It is not currently possible to express
this logical requirement in the config fragment so the
CONFIG_ANDROID_LOW_MEMORY_KILLER requirement is simply
removed for now.

Change-Id: I9cea0552a285ac635fc44f4b45762988e423d7db
Signed-off-by: Tao Huang <huangtao@rock-chips.com>

Author: rkhuangtao

arch/arm/configs/rockchip_defconfig

@@ -13,6 +13,8 @@ CONFIG_CGROUPS=y
 CONFIG_CGROUP_FREEZER=y
 CONFIG_CPUSETS=y
 CONFIG_CGROUP_CPUACCT=y
+CONFIG_MEMCG=y
+CONFIG_MEMCG_SWAP=y
 CONFIG_CGROUP_SCHED=y
 CONFIG_RT_GROUP_SCHED=y
 CONFIG_NAMESPACES=y
@@ -596,7 +598,6 @@ CONFIG_STAGING=y
 CONFIG_INV_MPU_IIO=y
 CONFIG_ASHMEM=y
 CONFIG_ANDROID_TIMED_GPIO=y
-CONFIG_ANDROID_LOW_MEMORY_KILLER=y
 CONFIG_SYNC=y
 CONFIG_SW_SYNC=y
 CONFIG_SW_SYNC_USER=y