x86/asm: Fix an assembler warning with current binutils

stable inclusion
from stable-v5.10.165
commit bf6c7f1801314a38e8049775003e4839db7c7bf6
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7T7G4

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=bf6c7f1801314a38e8049775003e4839db7c7bf6

--------------------------------

[ Upstream commit 55d23536 ]

Fix a warning: "found `movsd'; assuming `movsl' was meant"
Signed-off-by: NMikulas Patocka <mpatocka@redhat.com>
Signed-off-by: NIngo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: Nsanglipeng <sanglipeng1@jd.com>

arch/x86/lib/iomap_copy_64.S

@@ -10,6 +10,6 @@
  */
 SYM_FUNC_START(__iowrite32_copy)
 	movl %edx,%ecx
-	rep movsd
+	rep movsl
 	RET
 SYM_FUNC_END(__iowrite32_copy)