nios2: fix kuser trampoline address

__kuser_sigtramp address should be 0x1044 instead of 0x1040.

Signed-off-by: Ley Foon Tan <lftan@altera.com>

arch/nios2/kernel/signal.c

diff --git a/arch/nios2/kernel/signal.c b/arch/nios2/kernel/signal.c
index f9d2788..2d0ea25 100644
--- a/arch/nios2/kernel/signal.c
+++ b/arch/nios2/kernel/signal.c
@@ -200,7 +200,7 @@
 
 	/* Set up to return from userspace; jump to fixed address sigreturn
 	   trampoline on kuser page.  */
-	regs->ra = (unsigned long) (0x1040);
+	regs->ra = (unsigned long) (0x1044);
 
 	/* Set up registers for signal handler */
 	regs->sp = (unsigned long) frame;