Add a Kconfig to selectively enable the AMD Picasso eMMC driver
recently added to MrChromebox's edk2 fork. When selected, will enable
booting from AMD Picasso devices with eMMC storage.
TEST=tested with rest of patch train
Change-Id: I6536a6f243f6766b913e295afebcf5b965e4e969
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81892
Reviewed-by: Sean Rhodes <sean@starlabs.systems>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
63359d1bce