Fix below duplicate symbol warning for 'sof_sdw_quirk' variable.
ld.lld: error: duplicate symbol: sof_sdw_quirk
defined at acp-sdw-sof-mach.c
sound/soc/amd/acp/acp-sdw-sof-mach.o:(sof_sdw_quirk)
in archive vmlinux.a
defined at sof_sdw.c
sound/soc/intel/boards/sof_sdw.o:(.data+0x0) in
archive vmlinux.a
Fix below duplicate symbol warning for 'sof_sdw_quirk' variable.