Function 'sigmadsp_reset' is declared twice, so remove the repeated
declaration.

Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
Link: https://lore.kernel.org/r/1622279690-3740-1-git-send-email-zhangshaokun@hisilicon.comSigned-off-by: Mark Brown <broonie@kernel.org>