Revert "drm/amd/display: Update to using new dccg callbacks"

[Why]
Revert updated DCCG wrappers due to regression

[How]
This reverts commit 680458d41aa46a009909482f58358205b5c4b438.

Reviewed-by: Chris Park <[e-mail]>
Signed-off-by: Hansen Dsouza <[e-mail]>
Signed-off-by: Roman Li <[e-mail]>
Tested-by: Daniel Wheeler <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/display/dc/dccg/dcn35/dcn35_dccg.c

···
 	(void)&dccg35_disable_symclk_be_new;
 	(void)&dccg35_set_symclk32_le_root_clock_gating;
 	(void)&dccg35_set_smclk32_se_rcg;
-	(void)&dccg35_funcs;
+	(void)&dccg35_funcs_new;
 
 	base = &dccg_dcn->base;
 	base->ctx = ctx;
-	base->funcs = &dccg35_funcs_new;
+	base->funcs = &dccg35_funcs;
 
 	dccg_dcn->regs = regs;
 	dccg_dcn->dccg_shift = dccg_shift;