[PATCH v2] efi_loader: Rename and correct values for ARM_SMC_MM_*

[Heinrich Schuchardt]

On 17.07.20 06:55, Ilias Apalodimas wrote:
> Instead of adding the definition for the specific MM SVC used in
> StandAloneMM we added the one used in the standard SMC calls.
> So change the value from -4 to -5 to match the correct one defined in
> EDK2 and rename them to avoid future confusion
>
> Fixes 23a397d2e2fb: ("efi_loader: Add headers for EDK2 StandAloneMM communication")> Signed-off-by: Ilias Apalodimas <ilias.apalodimas at linaro.org>

Reviewed-by: Heinrich Schuchardt <xypron.glpk at gmx.de>