include/asm-generic/vmlinux.lds.h: align ro_after_init

Since the patch [1], building the kernel using a toolchain built with
binutils 2.33.1 prevents booting a sh4 system under Qemu.  Apply the patch
provided by Alan Modra [2] that fix alignment of rodata.

[1] https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=ebd2263ba9a9124d93bbc0ece63d7e0fae89b40e
[2] https://www.sourceware.org/ml/binutils/2019-12/msg00112.html

Signed-off-by: Romain Naour <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Cc: Alan Modra <[email protected]>
Cc: Bin Meng <[email protected]>
Cc: Chen Zhou <[email protected]>
Cc: Geert Uytterhoeven <[email protected]>
Cc: John Paul Adrian Glaubitz <[email protected]>
Cc: Krzysztof Kozlowski <[email protected]>
Cc: Kuninori Morimoto <[email protected]>
Cc: Rich Felker <[email protected]>
Cc: Sam Ravnborg <[email protected]>
Cc: Yoshinori Sato <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: <[email protected]>
Link: https://marc.info/?l=linux-sh&m=158429470221261
Signed-off-by: Linus Torvalds <[email protected]>

Author: RomainNaour

include/asm-generic/vmlinux.lds.h

@@ -394,6 +394,7 @@
  */
 #ifndef RO_AFTER_INIT_DATA
 #define RO_AFTER_INIT_DATA						\
+	. = ALIGN(8);							\
 	__start_ro_after_init = .;					\
 	*(.data..ro_after_init)						\
 	JUMP_TABLE_DATA							\