These are more human readable for folks not familiar with errno values. Change-Id: I21352a00b583163472ccd3302a83adf1f8396c61 Signed-off-by: Paul Wise <pabs3@bonedaddy.net> Reviewed-on: https://review.coreboot.org/19560 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>