ASoC: SOF: Intel: Let SND_SOF_SOF_HDA_SDW_BPT select SND_HDA_EXT_CORE

CONFIG_SND_HDA_EXT_CORE is required for CONFIG_SND_SOF_SOF_HDA_SDW_BPT.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202503170249.iPSBJSf5-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202503162042.2cNgaBmC-lkp@intel.com/

Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>

Author: bardliao

sound/soc/sof/intel/Kconfig

@@ -345,6 +345,7 @@ endif ## SND_SOC_SOF_HDA_GENERIC
 
 config SND_SOF_SOF_HDA_SDW_BPT
 	tristate
+	select SND_HDA_EXT_CORE
 	help
 	  This option is not user-selectable but automagically handled by
 	  'select' statements at a higher level.