sh: Fix compile error by operands(mov.l) in sh3/entry.S

-- log --
arch/sh/kernel/cpu/sh4/../sh3/entry.S:365: Error: invalid operands for opcode
make[4]: *** [arch/sh/kernel/cpu/sh4/../sh3/entry.o] Error 1
make[3]: *** [arch/sh/kernel/cpu/sh4] Error 2
-- log --

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>