The patch is applied to the EFI part.

UEFI drivers which implement the EFI_SIMPLE_TEXT_INPUT_EX protocol
are required to return KeyData.Key and KeyData.KeyState values.
These drivers must always return the most current state of
KeyData.KeyState.KeyShiftState and KeyData.KeyState.KeyToggleState.

The change in spec is "EFI_NOT_READY - There was no keystroke
data available. Current KeyData.KeyState values are exposed."

Cc: Supreeth Venkatesh <supreeth.venkatesh@arm.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Eric Jin <eric.jin@intel.com>
Reviewed-by: Supreeth Venkatesh <supreeth.venkatesh@arm.com>