i915/guc: Add Kabylake GuC Loading

This patch added the loading of the GuC for Kabylake.
It loads a 9.14 firmware.

v2: Fix commit message
v3: Fix major/minor var names to match -nightly. (Rodrigo)

Cc: Christophe Prigent <[e-mail]>
Signed-off-by: Peter Antoine <[e-mail]>
Signed-off-by: Michel Thierry <[e-mail]>
Reviewed-by: Rodrigo Vivi <[e-mail]>
Signed-off-by: Rodrigo Vivi <[e-mail]>
Reviewed-by: Michel Thierry <[e-mail]> (v3)
Signed-off-by: Tvrtko Ursulin <[e-mail]>
Link: http://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/i915/intel_guc_loader.c

···
 #define I915_BXT_GUC_UCODE "i915/bxt_guc_ver8_7.bin"
 MODULE_FIRMWARE(I915_BXT_GUC_UCODE);
 
+#define I915_KBL_GUC_UCODE "i915/kbl_guc_ver9_14.bin"
+MODULE_FIRMWARE(I915_KBL_GUC_UCODE);
+
 /* User-friendly representation of an enum */
 const char *intel_guc_fw_status_repr(enum intel_guc_fw_status status)
 {
···
 		fw_path = I915_BXT_GUC_UCODE;
 		guc_fw->guc_fw_major_wanted = 8;
 		guc_fw->guc_fw_minor_wanted = 7;
+	} else if (IS_KABYLAKE(dev)) {
+		fw_path = I915_KBL_GUC_UCODE;
+		guc_fw->guc_fw_major_wanted = 9;
+		guc_fw->guc_fw_minor_wanted = 14;
 	} else {
 		fw_path = "";	/* unknown device */
 	}