feat(plat/rcar3): modify operation register from SYSCISR to SYSCISCR
feat(plat/rcar3): modify operation register from SYSCISR to SYSCISCR

Modified the operation register to clearing the state bit of
the SYSCISR register from SYSCISR to SYSCISCR.

Signed-off-by: Hideyuki Nitta <157a8d8ef8f394e865e6e7e05394892c6ab1e8cd@hitachi.com>
Signed-off-by: Toshiyuki Ogasahara <400c4e7a7839959b6b07a73f04007ccb4fab1369@hitachi.com>
Signed-off-by: Yoshifumi Hosoya <d86d911fdf74bc568916e51d62d67d57b0acd5dd@renesas.com>
Change-Id: I9a0820b6414425fa2f4197f60852137827414a4d

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