x86: Add virtualization time sync support

x86: Add virtualization time sync support

This compiles the CONFIG_PTP_1588_CLOCK support into the kernel binary
and activates the drivers for KVM and VMware which allow syncing the
host time with the VM when OpenWrt is running in a VM. With this change
the CONFIG_HYPERV_UTILS driver is now build into the kernel, because it
depends on the PTP framework being compiled in. CONFIG_HYPERV_UTILS was
build as a module, but not packages before.

Fixes: #13277
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>