drm/i915/dmc_wl: store register ranges in rodata

Add const to register range arrays to store them in rodata. They don't
need to be modified.

Cc: Gustavo Sousa <gustavo.sousa@intel.com>
Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241218141734.2583601-1-jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

Author: jnikula

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

@@ -55,12 +55,12 @@ struct intel_dmc_wl_range {
 	u32 end;
 };
 
-static struct intel_dmc_wl_range powered_off_ranges[] = {
+static const struct intel_dmc_wl_range powered_off_ranges[] = {
 	{ .start = 0x60000, .end = 0x7ffff },
 	{},
 };
 
-static struct intel_dmc_wl_range xe3lpd_dc5_dc6_dmc_ranges[] = {
+static const struct intel_dmc_wl_range xe3lpd_dc5_dc6_dmc_ranges[] = {
 	{ .start = 0x45500 }, /* DC_STATE_SEL */
 	{ .start = 0x457a0, .end = 0x457b0 }, /* DC*_RESIDENCY_COUNTER */
 	{ .start = 0x45504 }, /* DC_STATE_EN */
@@ -94,7 +94,7 @@ static struct intel_dmc_wl_range xe3lpd_dc5_dc6_dmc_ranges[] = {
 	{},
 };
 
-static struct intel_dmc_wl_range xe3lpd_dc3co_dmc_ranges[] = {
+static const struct intel_dmc_wl_range xe3lpd_dc3co_dmc_ranges[] = {
 	{ .start = 0x454a0 }, /* CHICKEN_DCPR_4 */
 
 	{ .start = 0x45504 }, /* DC_STATE_EN */