sh: Fix up typo in arch/sh/kernel/vmlinux.lds.S

.init_ramfs ought to be .init.ramfs, fix it up.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

arch/sh/kernel/vmlinux.lds.S

@@ -127,7 +127,7 @@ SECTIONS
 
 #ifdef CONFIG_BLK_DEV_INITRD
 	. = ALIGN(PAGE_SIZE);
-	.init.ramfs : AT(ADDR(.init_ramfs) - LOAD_OFFSET) {
+	.init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) {
 		__initramfs_start = .;
 		*(.init.ramfs)
 		__initramfs_end = .;