Merge changes Idde51a13,Ife8f1e84 into integration

* changes:
feat(mediatek): add smcc call for MSDC
refactor(mediatek): refactor plat_sip_calls.h for mt8192/mt8195/mt8186

feat(mediatek): add smcc call for MSDC

Some registers of MSDC need to be set in ATF, so we add MSDC drivers.

Signed-off-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
Change-Id: Idde51a136ad08dbaece0b

feat(mediatek): add smcc call for MSDC

Some registers of MSDC need to be set in ATF, so we add MSDC drivers.

Signed-off-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
Change-Id: Idde51a136ad08dbaece0bdaa804b934fca7046b6

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