Cleanup patches for iosapic locks

Hi,

Here is a series of patches for cleaning up iosapic locks. This contains the following patches.

o [PATCH 1/4] Remove unnecessary lock indent in iosapi.c
o [PATCH 2/4] Remove duplicated members in iosapic_rte_info
o [PATCH 3/4] Use per iosapic lock for indirect iosapic register access
o [PATCH 4/4] Cleanup lock order in iosapic_register_intr

Please see header of each patch about details.

Thanks,
Kenji Kaneshige