drm/arm/malidp: use clk_bulk API in runtime PM resume and suspend

drm/arm/malidp: use clk_bulk API in runtime PM resume and suspend

malidp_runtime_pm_resume() calls clk_prepare_enable() three times
without checking the return value. If any clock fails to enable, the
driver silently proceeds with unclocked hardware, leading to undefined
behavior.

Convert both the resume and suspend paths to use the clk_bulk API:
clk_bulk_prepare_enable() in resume checks the return value and rolls
back any successfully enabled clocks on failure;
clk_bulk_disable_unprepare() in suspend keeps the two paths symmetric.

This issue was found by code review without access to Mali DP hardware.

Signed-off-by: Gustavo Kenji Mendonça Kaneko <kaneko.dev@pm.me>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Link: https://patch.msgid.link/20260609130812.1065699-1-kaneko.dev@pm.me
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>