x2apic: uninline uv_init_apic_ldr()

Andrew says:
> There's no point in declaring it inline if it's always called indirectly.

And point taken!

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: akpm@linux-foundation.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>