soc/intel/alderlake: Enable eMMC based on dev enabled

1. Add eMMC device function in pci_devs.h.
2. Enable eMMC device and configuration based on dev enabled.
3. Add SOC acpi name for eMMC.

Change-Id: I44f17420f7a2a1ca0fbb6cfb1886b1617c5a5064
Signed-off-by: Krishna Prasad Bhat <krishna.p.bhat.d@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61129
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Rizwan Qureshi <rizwan.qureshi@intel.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
diff --git a/src/soc/intel/alderlake/chip.c b/src/soc/intel/alderlake/chip.c
index 3f5c365..b423226 100644
--- a/src/soc/intel/alderlake/chip.c
+++ b/src/soc/intel/alderlake/chip.c
@@ -110,6 +110,9 @@
 	case PCH_DEVFN_HDA:		return "HDAS";
 	case PCH_DEVFN_SMBUS:		return "SBUS";
 	case PCH_DEVFN_GBE:		return "GLAN";
+#if CONFIG(SOC_INTEL_ALDERLAKE_PCH_N)
+	case PCH_DEVFN_EMMC:		return "EMMC";
+#endif
 	}
 
 	return NULL;