drm/amd/display: Rename program_timing function for better debugging

[WHY]
Improve the output when using the ftrace debug feature,
making it easier to identify which function is currently being executed.

[HOW]
Rename the program_timing function to a name that
includes the path to the function's file.

Signed-off-by: Antonio Fernando Silva e Cruz Filho <[e-mail]>
Co-developed-by: André Nogueira Ribeiro <[e-mail]>
Signed-off-by: André Nogueira Ribeiro <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/display/dc/dce80/dce80_timing_generator.c

···
 	dm_write_reg(tg->ctx, addr, value);
 }
 
-static void program_timing(struct timing_generator *tg,
+static void dce80_timing_generator_program_timing(struct timing_generator *tg,
 	const struct dc_crtc_timing *timing,
 	int vready_offset,
 	int vstartup_start,
···
 
 static const struct timing_generator_funcs dce80_tg_funcs = {
 		.validate_timing = dce110_tg_validate_timing,
-		.program_timing = program_timing,
+		.program_timing = dce80_timing_generator_program_timing,
 		.enable_crtc = dce110_timing_generator_enable_crtc,
 		.disable_crtc = dce110_timing_generator_disable_crtc,
 		.is_counter_moving = dce110_timing_generator_is_counter_moving,