drm/i915/bios: Update VBT driver feature block version numbers

While the spec does claim that most of the driver feature flags
start from BDB version 165, reality and some VBIOS code disagrees.
The VBIOS code says it starts from version 159, and my ILK
with version 162 definitely has these things already in its
VBT. Update the version number comments to say 159+ for all
the bits that seem relevant for pre-hsw hardware.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240321161806.31714-3-ville.syrjala@linux.intel.comAcked-by: Jani Nikula <jani.nikula@intel.com>

drivers/gpu/drm/i915/display/intel_vbt_defs.h

@@ -603,22 +603,22 @@ struct bdb_driver_features {
 	u8 custom_vbt_version;					/* 155+ */
 
 	/* Driver Feature Flags */
-	u16 rmpm_enabled:1;					/* 165+ */
-	u16 s2ddt_enabled:1;					/* 165+ */
-	u16 dpst_enabled:1;					/* 165-227 */
-	u16 bltclt_enabled:1;					/* 165+ */
-	u16 adb_enabled:1;					/* 165-227 */
-	u16 drrs_enabled:1;					/* 165-227 */
-	u16 grs_enabled:1;					/* 165+ */
-	u16 gpmt_enabled:1;					/* 165+ */
-	u16 tbt_enabled:1;					/* 165+ */
+	u16 rmpm_enabled:1;					/* 159+ */
+	u16 s2ddt_enabled:1;					/* 159+ */
+	u16 dpst_enabled:1;					/* 159-227 */
+	u16 bltclt_enabled:1;					/* 159+ */
+	u16 adb_enabled:1;					/* 159-227 */
+	u16 drrs_enabled:1;					/* 159-227 */
+	u16 grs_enabled:1;					/* 159+ */
+	u16 gpmt_enabled:1;					/* 159+ */
+	u16 tbt_enabled:1;					/* 159+ */
 	u16 psr_enabled:1;					/* 165-227 */
 	u16 ips_enabled:1;					/* 165+ */
 	u16 dfps_enabled:1;					/* 165+ */
 	u16 dmrrs_enabled:1;					/* 174-227 */
 	u16 adt_enabled:1;					/* ???-228 */
 	u16 hpd_wake:1;						/* 201-240 */
-	u16 pc_feature_valid:1;
+	u16 pc_feature_valid:1;					/* 159+ */
 } __packed;
 
 /*