ASoC: cs42l52: Fix mask bits for SOC_VALUE_ENUM_SINGLE

commit d31a33dd7792c7d6c11fda226a3b9e4fb7f86f95 upstream.

The mask bits values were wrong for the SOC_VALUE_ENUM_SINGLE for the PCM/ADC Swap controls

Reported-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Brian Austin <brian.austin@cirrus.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>