drm/i915/firmware: Update to DMC v2.12 on TGL

Add support to the latest DMC firmware.

Cc: Madhunitha Pradeep <madhumitha.tolakanahalli.pradeep@intel.com>
Signed-off-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Reviewed-by: Madhumitha Pradeep <madhumitha.tolakanahalli.pradeep@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210721215238.24980-3-anusha.srivatsa@intel.com

drivers/gpu/drm/i915/display/intel_dmc.c

@@ -61,8 +61,8 @@ MODULE_FIRMWARE(DG1_DMC_PATH);
 #define RKL_DMC_VERSION_REQUIRED	DMC_VERSION(2, 2)
 MODULE_FIRMWARE(RKL_DMC_PATH);
 
-#define TGL_DMC_PATH			DMC_PATH(tgl, 2, 08)
-#define TGL_DMC_VERSION_REQUIRED	DMC_VERSION(2, 8)
+#define TGL_DMC_PATH			DMC_PATH(tgl, 2, 12)
+#define TGL_DMC_VERSION_REQUIRED	DMC_VERSION(2, 12)
 MODULE_FIRMWARE(TGL_DMC_PATH);
 
 #define ICL_DMC_PATH			DMC_PATH(icl, 1, 09)