[PATCH v2 RESEND] drm/pci: add missing variable initialization

Fixed build warning as below: drivers/gpu/drm/drm_pci.c: In function 'drm_pcie_get_speed_cap_mask': drivers/gpu/drm/drm_pci.c:496:9: warning: 'lnkcap' may be used uninitialized in this function [-Wuninitialized] drivers/gpu/drm/drm_pci.c:497:10: warning: 'lnkcap2' may be used uninitialized in th

[PATCH v2 RESEND] drm/pci: add missing variable initialization

Fixed build warning as below: drivers/gpu/drm/drm_pci.c: In function 'drm_pcie_get_speed_cap_mask': drivers/gpu/drm/drm_pci.c:496:9: warning: 'lnkcap' may be used uninitialized in this function [-Wuninitialized] drivers/gpu/drm/drm_pci.c:497:10: warning: 'lnkcap2' may be used uninitialized in th