i386: enable rust hpet for pc when rust is enabled

Add HPET configuration in PC's Kconfig options, and select HPET device
(Rust version) if Rust is supported.

Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Link: https://lore.kernel.org/r/20250210030051.2562726-11-zhao1.liu@intel.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
6 files changed