drm/amd/display: 3.2.151

* coverity kernel memory leak fixes
* NULL pointer dereference fixes
* Add periodic detection when zstate is enabled
* Fork thread to offload work of hpd_rx_irq

Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Aric Cyr <aric.cyr@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dc.h

@@ -45,7 +45,7 @@
 /* forward declaration */
 struct aux_payload;
 
-#define DC_VER "3.2.150"
+#define DC_VER "3.2.151"
 
 #define MAX_SURFACES 3
 #define MAX_PLANES 6