all archs: consolidate init and exit sections in vmlinux.lds.h

This patch consolidate all definitions of .init.text, .init.data
and .exit.text, .exit.data section definitions in
the generic vmlinux.lds.h.

This is a preparational patch - alone it does not buy
us much good.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

arch/mips/kernel/vmlinux.lds.S

@@ -114,11 +114,11 @@ SECTIONS
 	__init_begin = .;
 	.init.text : {
 		_sinittext = .;
-		*(.init.text)
+		INIT_TEXT
 		_einittext = .;
 	}
 	.init.data : {
-		*(.init.data)
+		INIT_DATA
 	}
 	. = ALIGN(16);
 	.init.setup : {
@@ -144,10 +144,10 @@ SECTIONS
 	 * references from .rodata
 	 */
 	.exit.text : {
-		*(.exit.text)
+		EXIT_TEXT
 	}
 	.exit.data : {
-		*(.exit.data)
+		EXIT_DATA
 	}
 #if defined(CONFIG_BLK_DEV_INITRD)
 	. = ALIGN(_PAGE_SIZE);