soc/intel/alderlake: Add SPI DMI Destination ID

Port commit 237afda (src/soc/intel/tigerlake: Add SPI DMI Destination ID)
into Alderlake.

Change-Id: Ia0b465d405ab3c70b7d4094d32c182cab30fe531
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48754
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>

src/soc/intel/alderlake/include/soc/pcr_ids.h

@@ -32,4 +32,10 @@
 #define PID_ITSS	0xc4
 #define PID_SERIALIO	0xcb
 
+
+/*
+ * SPI - DMI Destination ID
+ */
+#define SPI_DMI_DESTINATION_ID  0x23a8
+
 #endif

src/soc/intel/alderlake/spi.c

@@ -6,8 +6,10 @@
  * Chapter number: 7
  */
 
+#include <intelblocks/fast_spi.h>
 #include <intelblocks/spi.h>
 #include <soc/pci_devs.h>
+#include <soc/pcr_ids.h>
 
 int spi_soc_devfn_to_bus(unsigned int devfn)
 {
@@ -25,3 +27,8 @@ int spi_soc_devfn_to_bus(unsigned int devfn)
 	}
 	return -1;
 }
+
+uint32_t soc_get_spi_dmi_destination_id(void)
+{
+	return SPI_DMI_DESTINATION_ID;
+}