ui: Add VB2_UI_ERROR_MINIOS_BOOT_FAILED
ui: Add VB2_UI_ERROR_MINIOS_BOOT_FAILED

Add a new error type VB2_UI_ERROR_MINIOS_BOOT_FAILED for MiniOS boot
failure.

BUG=b:200750322
TEST=emerge-cherry depthcharge
BRANCH=none

Change-Id: Ia567c9ec735e7aae830ad311b2261e01fed53876
Signed-off-by: Yu-Ping Wu <e17b963d2ce5bddd1fecae25c320252b132e804d@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/3249590
Reviewed-by: Hsuan Ting Chen <ac2917b87838b7bb62e5c0056c190a1955e52056@chromium.org>
Reviewed-by: Jae Hoon Kim <c12e0fbc1cb5394470ed25a289c6d100e9c2e1d6@chromium.org>

coreboot/vboot,coreboot/vboot,coreboot/vboot,coreboot/vboot,coreboot/vboot