ASoC: SOF: Intel: Fix build error without SND_SOC_SOF_PCI_DEV

If SND_SOC_SOF_PCI_DEV is n, bulding fails:

sound/soc/sof/intel/pci-tng.o:(.data+0x1c0): undefined reference to `sof_pci_probe'
sound/soc/sof/intel/pci-tng.o:(.data+0x1c8): undefined reference to `sof_pci_remove'
sound/soc/sof/intel/pci-tng.o:(.data+0x1e0): undefined reference to `sof_pci_shutdown'
sound/soc/sof/intel/pci-tng.o:(.data+0x290): undefined reference to `sof_pci_pm'

Make SND_SOC_SOF_MERRIFIELD select SND_SOC_SOF_PCI_DEV to fix this.

Fixes: 8d4ba1be ("ASoC: SOF: pci: split PCI into different drivers")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zheng Bin <zhengbin13@huawei.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220323092501.145879-1-zhengbin13@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/intel/Kconfig

@@ -84,6 +84,7 @@ if SND_SOC_SOF_PCI
 config SND_SOC_SOF_MERRIFIELD
 	tristate "SOF support for Tangier/Merrifield"
 	default SND_SOC_SOF_PCI
+	select SND_SOC_SOF_PCI_DEV
 	select SND_SOC_SOF_INTEL_ATOM_HIFI_EP
 	help
 	  This adds support for Sound Open Firmware for Intel(R) platforms