x86/NUMA: fix SRAT table processor entry parsing and consumption

x86/NUMA: fix SRAT table processor entry parsing and consumption

- don't overrun apicid_to_node[] (possible in the x2APIC case)
- don't limit number of processor related SRAT entries we can consume
- make acpi_numa_{processor,x2apic}_affinity_init() as similar to one
  another as possible
- print APIC IDs in hex (to ease matching with other log messages), at
  once making legacy and x2APIC ones distinguishable (by width)

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>