drm/amdgpu/discovery: fix DCE_HWIP mapping error in hw_id_map array

ID of DCE_HWIP from vbios is DMU_HWID,
mismatch cause null pointer crash in navi10 modprobe.
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Reviewed-by: Xiaojie Yuan <xiaojie.yuan@amd.com>
Signed-off-by: tiancyin <tianci.yin@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c

@@ -123,7 +123,7 @@ static int hw_id_map[MAX_HWIP] = {
 	[UVD_HWIP]	= UVD_HWID,
 	[VCE_HWIP]	= VCE_HWID,
 	[DF_HWIP]	= DF_HWID,
-	[DCE_HWIP]	= DCEAZ_HWID,
+	[DCE_HWIP]	= DMU_HWID,
 	[OSSSYS_HWIP]	= OSSSYS_HWID,
 	[SMUIO_HWIP]	= SMUIO_HWID,
 	[PWR_HWIP]	= PWR_HWID,