[IA64] Remove warnings for gcc 4.0 IA64 compilation.

This patch removes some compilation warnings, mostly
trivially. acpi.c fix also noted by Kenji Kaneshige.

Signed-off-by; Peter Chubb <peterc@gelato.unsw.edu.au>
Signed-off-by: Tony Luck <tony.luck@intel.com>
4 files changed