ASoC: codecs: rt5682: clarify expression

cppcheck warning:

sound/soc/codecs/rt5682.c:2404:42: style: Boolean result is used in
bitwise operation. Clarify expression with
parentheses. [clarifyCondition]
   (pll_code.m_bp << RT5682_PLL_M_BP_SFT | RT5682_PLL_RST));
                                         ^

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Daniel Baluta <daniel.baluta@gmail.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Link: https://lore.kernel.org/r/20210416191144.27006-6-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>