The following new edk2 options are set:
- BOOTSPLASH_IMAGE: Enable boot logo and add it to BGRT
- BOOT_MANAGER_ESCAPE: Use Esc instead of F2 to enter firmware setup
- SD_MMC_TIMEOUT: Reduce SD card timeout from 1s to 100ms
- SIO_BUS_ENABLE: Keep PS/2 keyboard working
- VARIABLE_SUPPORT: Set to emulated until coreboot SMMSTORE support is
implemented
Signed-off-by: Tim Crawford <tcrawford@system76.com>