drivers: mmc: Fix R3 response type definition
drivers: mmc: Fix R3 response type definition

The R3 response type definition should be (1 << 0). Make sure we define the
expected response code in the appropriate fashion.

Signed-off-by: Bryan O'Donoghue <165dc05575478af93ac2f97f67be6e1756010094@linaro.org>

achingupta/arm-trusted-firmware,achingupta/arm-trusted-firmware