[IA64] fix section mismatch warnings

In 741f98fe29 Sam added full
checking across the entire vmlinux image.  This flushed out
a dozen new section mismatch warnings.  Start the whack-a-mole
game again to stomp them out.

Signed-off-by: Tony Luck <tony.luck@intel.com>

arch/ia64/kernel/head.S

@@ -178,7 +178,7 @@ swapper_pg_dir:
 halt_msg:
 	stringz "Halting kernel\n"
 
-	.text
+	.section .text.head,"ax"
 
 	.global start_ap
 
@@ -392,6 +392,8 @@ self:	hint @pause
 	br.sptk.many self		// endless loop
 END(_start)
 
+	.text
+
 GLOBAL_ENTRY(ia64_save_debug_regs)
 	alloc r16=ar.pfs,1,0,0,0
 	mov r20=ar.lc			// preserve ar.lc