drm/amd/display: Fix warning for analog stream encoders

Fixes the following warning that some users are reporting
with some kernel configurations:

"positional initialization of field in 'struct' declared
with 'designated_init' attribute"

Signed-off-by: Timur Kristóf <[e-mail]>
Reviewed-by: Harry Wentland <[e-mail]>
Acked-by: Kees Cook <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mario Limonciello <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c

···
 	enc110->se_mask = se_mask;
 }
 
-static const struct stream_encoder_funcs dce110_an_str_enc_funcs = {0};
+static const struct stream_encoder_funcs dce110_an_str_enc_funcs = {};
 
 void dce110_analog_stream_encoder_construct(
 	struct dce110_stream_encoder *enc110,