x86: Fix a couple of sparse warnings in arch/x86/kernel/apic/io_apic.c
x86: Fix a couple of sparse warnings in arch/x86/kernel/apic/io_apic.c

Impact: cleanup

This patch fixes the following sparse warnings:

 arch/x86/kernel/apic/io_apic.c:3602:17: warning: symbol 'hpet_msi_type'
 was not declared. Should it be static?

 arch/x86/kernel/apic/io_apic.c:3467:30: warning: Using plain integer as
 NULL pointer

Signed-off-by: Dmitri Vorobiev <c182faaccd98c386beebc1be0ad63ed5bc4ff904@movial.com>
LKML-Reference: <1237741871-5827-2-git-send-email-c182faaccd98c386beebc1be0ad63ed5bc4ff904@movial.com>
Signed-off-by: Ingo Molnar <9dbbbf0688fedc85ad4da37637f1a64b8c718ee2@elte.hu>

KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas