Running ia64 through sparse gives warnings in the unwind code.
  include/asm-ia64/unwind.h:84:17: error: dubious bitfield without explicit `signed' or `unsigned'
Make the bitfield explicitly unsigned.
Signed-off-by: Keith Owens <kaos@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
        struct unw_ireg {
                unsigned long *loc;
                struct unw_ireg_nat {
-                       long type : 3;                  /* enum unw_nat_type */
+                       unsigned long type : 3;         /* enum unw_nat_type */
                        signed long off : 61;           /* NaT word is at loc+nat.off */
                } nat;
        } r4, r5, r6, r7;