sh: Have SH-5 provide an {en,dis}able_fpu() impl.

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 742ce18..0f4ea3a 100644
--- a/arch/sh/kernel/traps_64.c
+++ b/arch/sh/kernel/traps_64.c
@@ -617,9 +617,9 @@
 		   context switch the registers into memory so they can be
 		   indexed by register number. */
 		if (last_task_used_math == current) {
-			grab_fpu();
+			enable_fpu();
 			fpsave(&current->thread.fpu.hard);
-			release_fpu();
+			disable_fpu();
 			last_task_used_math = NULL;
 			regs->sr |= SR_FD;
 		}
@@ -690,9 +690,9 @@
 		   context switch the registers into memory so they can be
 		   indexed by register number. */
 		if (last_task_used_math == current) {
-			grab_fpu();
+			enable_fpu();
 			fpsave(&current->thread.fpu.hard);
-			release_fpu();
+			disable_fpu();
 			last_task_used_math = NULL;
 			regs->sr |= SR_FD;
 		}