drm/msm/disp/dpu1: set vbif hw config to NULL to avoid use after memory free during pm runtime resume

In the Linux kernel, the following vulnerability has been resolved:

drm/msm/disp/dpu1: set vbif hw config to NULL to avoid use after memory free during pm runtime resume

BUG: Unable to handle kernel paging request at virtual address 006b6b6b6b6b6be3

Call trace:

dpu_vbif_init_memtypes+0x40/0xb8

dpu_runtime_resume+0xcc/0x1c0

pm_generic_runtime_resume+0x30/0x44

__genpd_runtime_resume+0x68/0x7c

genpd_runtime_resume+0x134/0x258

__rpm_callback+0x98/0x138

rpm_callback+0x30/0x88

rpm_resume+0x36c/0x49c

__pm_runtime_resume+0x80/0xb0

dpu_core_irq_uninstall+0x30/0xb0

dpu_irq_uninstall+0x18/0x24

msm_drm_uninit+0xd8/0x16c

Patchwork: https://patchwork.freedesktop.org/patch/483255/

[DB: fixed Fixes tag]