soc/intel/elkhartlake: Make use of `cpu/intel/cpu_ids.h'

Remove inclusion of mp_init.h for getting CPUIDs and use dedicated
cpu_ids.h file in SoC directory.

Change-Id: Ieb8063116bee59f6f6bf1f6b0b2349ce22bd67bd
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56378
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Lean Sheng Tan <lean.sheng.tan@intel.com>

src/soc/intel/elkhartlake/bootblock/report_platform.c

@@ -2,13 +2,13 @@
 
 #include <arch/cpu.h>
 #include <console/console.h>
+#include <cpu/intel/cpu_ids.h>
 #include <cpu/intel/microcode.h>
 #include <cpu/x86/msr.h>
 #include <cpu/x86/name.h>
 #include <device/pci.h>
 #include <device/pci_ids.h>
 #include <device/pci_ops.h>
-#include <intelblocks/mp_init.h>
 #include <soc/bootblock.h>
 #include <soc/pch.h>
 #include <soc/pci_devs.h>

src/soc/intel/elkhartlake/fsp_params.c

@@ -6,7 +6,6 @@
 #include <fsp/ppi/mp_service_ppi.h>
 #include <fsp/util.h>
 #include <intelblocks/lpss.h>
-#include <intelblocks/mp_init.h>
 #include <intelblocks/pmclib.h>
 #include <intelblocks/xdci.h>
 #include <intelpch/lockdown.h>