drm/xe/gsc: add HECI2 register offsets

Add HECI2 register offsets for DG1 and DG2 to regs/xe_regs.h
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Vitaly Lubart <vitaly.lubart@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

drivers/gpu/drm/xe/regs/xe_regs.h

@@ -33,6 +33,10 @@
 #define XEHPC_BCS6_RING_BASE			0x3ea000
 #define XEHPC_BCS7_RING_BASE			0x3ec000
 #define XEHPC_BCS8_RING_BASE			0x3ee000
+
+#define DG1_GSC_HECI2_BASE                      0x00259000
+#define DG2_GSC_HECI2_BASE                      0x00374000
+
 #define GSCCS_RING_BASE				0x11a000
 #define   GT_WAIT_SEMAPHORE_INTERRUPT		REG_BIT(11)
 #define   GT_CONTEXT_SWITCH_INTERRUPT		REG_BIT(8)