drm/amd/display: correct dcn21 NUM_VMID to 16

1 vmid limitation only exists for HOSTVM which is a custom
use case anyway.
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Reviewed-by: Roman Li <Roman.Li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubbub.c

@@ -52,7 +52,7 @@
 #ifdef NUM_VMID
 #undef NUM_VMID
 #endif
-#define NUM_VMID 1
+#define NUM_VMID 16
 
 static uint32_t convert_and_clamp(
 	uint32_t wm_ns,