drm/amd/display: Fix Compiler warnings in dmub

[Why]
Resolve compiler warnings by marking unused parameters explicitly.

[How]
In .c and .h files, keep parameter names in signatures and add a
line with`(void)param;`  inside the function body

Preserved function signatures and avoids breaking code paths that
may reference the parameter under conditional compilation.

Reviewed-by: Aric Cyr <aric.cyr@amd.com>
Signed-off-by: Gaghik Khachatrian <gaghik.khachatrian@amd.com>
Signed-off-by: Chuanyu Tseng <chuanyu.tseng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c

@@ -194,6 +194,7 @@ void dmub_dcn20_setup_windows(struct dmub_srv *dmub,
 			      const struct dmub_window *cw6,
 			      const struct dmub_window *region6)
 {
+	(void)region6;
 	union dmub_addr offset;
 	uint64_t fb_base, fb_offset;
 
@@ -396,6 +397,7 @@ union dmub_fw_boot_status dmub_dcn20_get_fw_boot_status(struct dmub_srv *dmub)
 
 void dmub_dcn20_enable_dmub_boot_options(struct dmub_srv *dmub, const struct dmub_srv_hw_params *params)
 {
+	(void)params;
 	union dmub_fw_boot_options boot_options = {0};
 
 	REG_WRITE(DMCUB_SCRATCH14, boot_options.all);

drivers/gpu/drm/amd/display/dmub/src/dmub_dcn30.c

@@ -127,6 +127,7 @@ void dmub_dcn30_setup_windows(struct dmub_srv *dmub,
 			      const struct dmub_window *cw6,
 			      const struct dmub_window *region6)
 {
+	(void)region6;
 	union dmub_addr offset;
 
 	/* sienna_cichlid  has hardwired virtual addressing for CW2-CW7 */

drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c

@@ -195,6 +195,8 @@ void dmub_dcn31_setup_windows(struct dmub_srv *dmub,
 			      const struct dmub_window *cw6,
 			      const struct dmub_window *region6)
 {
+	(void)cw2;
+	(void)region6;
 	union dmub_addr offset;
 
 	offset = cw3->offset;

drivers/gpu/drm/amd/display/dmub/src/dmub_dcn32.c

@@ -237,6 +237,8 @@ void dmub_dcn32_setup_windows(struct dmub_srv *dmub,
 		const struct dmub_window *cw6,
 		const struct dmub_window *region6)
 {
+	(void)cw2;
+	(void)region6;
 	union dmub_addr offset;
 
 	offset = cw3->offset;

drivers/gpu/drm/amd/display/dmub/src/dmub_dcn35.c

@@ -222,6 +222,7 @@ void dmub_dcn35_setup_windows(struct dmub_srv *dmub,
 			      const struct dmub_window *cw6,
 			      const struct dmub_window *region6)
 {
+	(void)cw2;
 	union dmub_addr offset;
 
 	offset = cw3->offset;

drivers/gpu/drm/amd/display/dmub/src/dmub_dcn401.c

@@ -213,6 +213,7 @@ void dmub_dcn401_setup_windows(struct dmub_srv *dmub,
 		const struct dmub_window *cw6,
 		const struct dmub_window *region6)
 {
+	(void)cw2;
 	union dmub_addr offset;
 
 	offset = cw3->offset;

drivers/gpu/drm/amd/display/dmub/src/dmub_dcn42.c

@@ -229,6 +229,7 @@ void dmub_dcn42_setup_windows(struct dmub_srv *dmub,
 			      const struct dmub_window *cw6,
 			      const struct dmub_window *region6)
 {
+	(void)cw2;
 	union dmub_addr offset;
 
 	offset = cw3->offset;

drivers/gpu/drm/amd/display/dmub/src/dmub_reg.c

@@ -45,6 +45,7 @@ static void set_reg_field_values(struct dmub_reg_value_masks *field_value_mask,
 				 uint32_t mask1, uint32_t field_value1,
 				 va_list ap)
 {
+	(void)addr;
 	uint32_t shift, mask, field_value;
 	int i = 1;