[IA64] Use standard macros for page-aligned data.

Signed-off-by: Nelson Elhage <nelhage@ksplice.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

arch/ia64/kernel/head.S

@@ -167,7 +167,7 @@ RestRR:											\
 	mov _tmp2=((ia64_rid(IA64_REGION_ID_KERNEL, (num<<61)) << 8) | (pgsize << 2) | vhpt);; \
 	mov rr[_tmp1]=_tmp2
 
-	.section __special_page_section,"ax"
+	__PAGE_ALIGNED_DATA
 
 	.global empty_zero_page
 empty_zero_page:

arch/ia64/kernel/vmlinux.lds.S

@@ -219,7 +219,9 @@ SECTIONS
 	{ *(.data.init_task) }
 
   .data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET)
-        { *(__special_page_section)
+        {
+	PAGE_ALIGNED_DATA(PAGE_SIZE)
+	  . = ALIGN(PAGE_SIZE);
 	  __start_gate_section = .;
 	  *(.data.gate)
 	  __stop_gate_section = .;