fix(mt8188): refine gic init flow after system resume

fix(mt8188): refine gic init flow after system resume

Call gicv3_distif_init() instead of mt_gic_init() in
armv8_2_mcusys_pwr_on_common(). This is to prevent
gicv3_rdistif_init() and gicv3_cpuif_enable() from being called twice
in the power-on flow. gicv3_rdistif_init() and gicv3_cpuif_enable()
are called in later armv8_2_cpu_pwr_on_common().

BUG=b:244215539
TEST=Suspend Resume Test pass

Change-Id: Id752c1ccbb9eab277ed6278c2dd90a051a894146
Signed-off-by: Liju-Clr Chen <liju-clr.chen@mediatek.com>