According to the UEFI Specification version 2.11, the valid range for the Year field in the EFI_TIME structure is from 1900 to 9999. Currently IsTimeValid() checks a restricted range 2000 - 2099. Update range in TimeBaseLib.c to match UEFI specification. Signed-off-by: Pankaj Singh <pansing@qti.qualcomm.com>