soc/intel/apollolake: add initial NHLT support

Provide the initial NHLT support for the following hardware:

1. 2 channel digital microphone array
2. Dialog 7219 headset
3. Maxim 98357 speaker amplifiers.

The code utilizes the Intel SoC common NHLT support.

Change-Id: Ic31e834a08f29c66512a7a63ad7bb35e0374e86a
Signed-off-by: Saurabh Satija <saurabh.satija@intel.com>
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/15504
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins)

src/soc/intel/apollolake/Kconfig

@@ -17,6 +17,9 @@ config CPU_SPECIFIC_OPTIONS
 	select SMP
 	select SSE2
 	select SUPPORT_CPU_UCODE_IN_CBFS
+	# Audio options
+	select ACPI_NHLT
+	select SOC_INTEL_COMMON_NHLT
 	# Misc options
 	select C_ENVIRONMENT_BOOTBLOCK
 	select COLLECT_TIMESTAMPS
@@ -182,4 +185,25 @@ config IFWI_FILE_NAME
 	help
 	  Name of file to store in the IFWI region.
 
+config NHLT_DMIC_2CH_16B
+	bool
+	depends on ACPI_NHLT
+	default n
+	help
+	  Include DSP firmware settings for 2 channel 16B DMIC array.
+
+config NHLT_MAX98357
+	bool
+	depends on ACPI_NHLT
+	default n
+	help
+	  Include DSP firmware settings for headset codec.
+
+config NHLT_DA7219
+	bool
+	depends on ACPI_NHLT
+	default n
+	help
+	  Include DSP firmware settings for headset codec.
+
 endif