arm64: defconfig: Enable nvmem's rmem driver

raspberrypi inclusion
category: feature
bugzilla: 50432

--------------------------------

It'll be used by the RPi4 family of boards to access its bootloader
configuration.
Signed-off-by: NNicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: NFang Yafen <yafen@iscas.ac.cn>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

arch/arm64/configs/defconfig

@@ -1027,6 +1027,7 @@ CONFIG_ROCKCHIP_EFUSE=y
 CONFIG_NVMEM_SUNXI_SID=y
 CONFIG_UNIPHIER_EFUSE=y
 CONFIG_MESON_EFUSE=m
+CONFIG_NVMEM_RMEM=m
 CONFIG_FPGA=y
 CONFIG_FPGA_MGR_STRATIX10_SOC=m
 CONFIG_FPGA_BRIDGE=m