sh64: Fix up the build for the thread_xstate changes.

This updates the sh64 processor info with the sh32 changes in order to
tie in to the generic task_xstate management code.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/kernel/signal_64.c b/arch/sh/kernel/signal_64.c
index ce76dbd..4733bfc 100644
--- a/arch/sh/kernel/signal_64.c
+++ b/arch/sh/kernel/signal_64.c
@@ -295,7 +295,7 @@
 		regs->sr |= SR_FD;
 	}
 
-	err |= __copy_from_user(&current->thread.fpu.hard, &sc->sc_fpregs[0],
+	err |= __copy_from_user(&current->thread.xstate->hardfpu, &sc->sc_fpregs[0],
 				(sizeof(long long) * 32) + (sizeof(int) * 1));
 
 	return err;
@@ -320,7 +320,7 @@
 		regs->sr |= SR_FD;
 	}
 
-	err |= __copy_to_user(&sc->sc_fpregs[0], &current->thread.fpu.hard,
+	err |= __copy_to_user(&sc->sc_fpregs[0], &current->thread.xstate->hardfpu,
 			      (sizeof(long long) * 32) + (sizeof(int) * 1));
 	clear_used_math();