sh: Fix up FPU build for SH5

After the recent FPU optimisation commit the signature of save_fpu()
changed. "regs" wasn't used in the implementation of save_fpu() anyway.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/kernel/traps_64.c b/arch/sh/kernel/traps_64.c
index 75c0cbe..d86f531 100644
--- a/arch/sh/kernel/traps_64.c
+++ b/arch/sh/kernel/traps_64.c
@@ -600,7 +600,7 @@
 		   indexed by register number. */
 		if (last_task_used_math == current) {
 			enable_fpu();
-			save_fpu(current, regs);
+			save_fpu(current);
 			disable_fpu();
 			last_task_used_math = NULL;
 			regs->sr |= SR_FD;
@@ -673,7 +673,7 @@
 		   indexed by register number. */
 		if (last_task_used_math == current) {
 			enable_fpu();
-			save_fpu(current, regs);
+			save_fpu(current);
 			disable_fpu();
 			last_task_used_math = NULL;
 			regs->sr |= SR_FD;