m68knommu: fix missing .data.cacheline_aligned section

Add a .data.cacheline_aligned section to the data segment.
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>

arch/m68knommu/kernel/vmlinux.lds.S

@@ -147,6 +147,8 @@ SECTIONS {
 		. = ALIGN(4);
 		_sdata = . ;
 		DATA_DATA
+		. = ALIGN(32);
+		*(.data.cacheline_aligned)
 		. = ALIGN(8192) ;
 		*(.data.init_task)
 		_edata = . ;