Fix up drivers/soc/mediatek/mtk-scpsys.c:255:2-3: Unneeded semicolon
accidently being added in commit f9e2f65dd561 ("soc: mediatek: add a
fixed wait for SRAM stable").

Fixes: f9e2f65dd561 ("soc: mediatek: add a fixed wait for SRAM stable")
Reported-by: Nkbuild test robot <lkp@intel.com>
Signed-off-by: NSean Wang <sean.wang@mediatek.com>
Signed-off-by: NMatthias Brugger <matthias.bgg@gmail.com>