ASoC: pxa: sspa: Don't select SND_ARM

On ARM64 platforms, SND_ARM shouldn't be selectable, but enabling
SND_SOC_MMP_SSPA will enable SND_ARM and cause build errors if
SND_ARMAACI is enabled (which it is by default). Since the SSPA driver
doesn't depend on AACI nor PXA2XX_LIB, remove this false dependency.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202310230518.zs9Qpg3j-lkp@intel.com/
Signed-off-by: Duje Mihanović <duje.mihanovic@skole.hr>
Link: https://lore.kernel.org/r/20231226200025.30870-1-duje.mihanovic@skole.hr
Signed-off-by: Mark Brown <broonie@kernel.org>