ASoC: SOF: Intel: hda-sdw-bpt: fix SND_SOF_SOF_HDA_SDW_BPT dependencies

The hda-sdw-bpt code links against the soundwire driver, but that fails when
trying to link from built-in code into loadable module:

x86_64-linux-ld: vmlinux.o: in function `intel_ace2x_bpt_close_stream.isra.0':
intel_ace2x.c:(.text+0x137a531): undefined reference to `hda_sdw_bpt_close'
x86_64-linux-ld: vmlinux.o: in function `intel_ace2x_bpt_send_async':
intel_ace2x.c:(.text+0x137aa45): undefined reference to `hda_sdw_bpt_open'
x86_64-linux-ld: intel_ace2x.c:(.text+0x137ab67): undefined reference to `hda_sdw_bpt_close'
x86_64-linux-ld: intel_ace2x.c:(.text+0x137ac30): undefined reference to `hda_sdw_bpt_send_async'
x86_64-linux-ld: vmlinux.o: in function `intel_ace2x_bpt_wait':
intel_ace2x.c:(.text+0x137aced): undefined reference to `hda_sdw_bpt_wait'

Ensure that both SOUNDWIRE_INTEL and SND_SOF_SOF_HDA_SDW_BPT are selected
at the same time by SND_SOC_SOF_INTEL_LNL, and that this happens even if
SND_SOC_SOF_INTEL_SOUNDWIRE is a loadable module but SND_SOC_SOF_INTEL_LNL
is built-in.

This follows the same logic as commit c5a61db ("ASoC: SOF: fix
intel-soundwire link failure").

Fixes: 5d5cb86 ("ASoC: SOF: Intel: hda-sdw-bpt: add helpers for SoundWire BPT DMA")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://patch.msgid.link/20250805160451.4004602-1-arnd@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: arndb

sound/soc/sof/intel/Kconfig

@@ -266,9 +266,10 @@ config SND_SOC_SOF_METEORLAKE
 
 config SND_SOC_SOF_INTEL_LNL
 	tristate
+	select SOUNDWIRE_INTEL if SND_SOC_SOF_INTEL_SOUNDWIRE != n
 	select SND_SOC_SOF_HDA_GENERIC
 	select SND_SOC_SOF_INTEL_SOUNDWIRE_LINK_BASELINE
-	select SND_SOF_SOF_HDA_SDW_BPT if SND_SOC_SOF_INTEL_SOUNDWIRE
+	select SND_SOF_SOF_HDA_SDW_BPT if SND_SOC_SOF_INTEL_SOUNDWIRE != n
 	select SND_SOC_SOF_IPC4
 	select SND_SOC_SOF_INTEL_MTL