This adds a kernel configuration file for kernel 4.19 on malta.
CONFIG_POWER_RESET_PIIX4_POWEROFF and CONFIG_POWER_RESET_SYSCON were
activated because malta now uses this driver for reboot.
CONFIG_BLK_DEV_SR was also added because it was also added to the kernel
default configuration.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
