Enable x2APIC controller support on x86 and OVA (#4342)

This might be required for some modern Intel processors (Meteor Lake and newer)
which fail to boot Linux kernel without x2APIC controller when some features
(e.g. VT-d or x2APIC itself) are enabled in the BIOS.

Enable it also for OVA, as it can be emulated in virtual machines, even when
the host CPU does not support it.

Fixes #4337, fixes #4144, fixes #4345

Author: sairon

buildroot-external/board/pc/generic-x86-64/kernel.config

@@ -46,6 +46,7 @@ CONFIG_MMC_SDHCI_ACPI=y
 CONFIG_MMC_SDHCI_PCI=y
 CONFIG_MMC_REALTEK_PCI=m
 CONFIG_MMC_REALTEK_USB=m
+CONFIG_X86_X2APIC=y
 CONFIG_X86_INTEL_LPSS=y
 
 CONFIG_MISC_RTSX_PCI=m

buildroot-external/board/pc/ova/kernel.config

@@ -97,6 +97,7 @@ CONFIG_MMC_BLOCK=y
 CONFIG_MMC_SDHCI=y
 CONFIG_MMC_SDHCI_ACPI=y
 CONFIG_MMC_SDHCI_PCI=y
+CONFIG_X86_X2APIC=y
 CONFIG_X86_INTEL_LPSS=y
 
 CONFIG_DRM=y