sparc64: Fix bug in PTRACE_SETFPREGS64 handling.

From: Chris Torek <chris.torek@windriver.com>

>The SPARC64 kernel code for PTRACE_SETFPREGS64 appears to be an exact copy 
>of that for PTRACE_GETFPREGS64.  This means that gdbserver and native 
>64-bit GDB cannot set floating-point registers.

It looks like a simple typo.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

arch/sparc64/kernel/ptrace.c

@@ -1014,7 +1014,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 		break;
 
 	case PTRACE_SETFPREGS64:
-		ret = copy_regset_to_user(child, view, REGSET_FP,
+		ret = copy_regset_from_user(child, view, REGSET_FP,
 					  0 * sizeof(u64),
 					  33 * sizeof(u64),
 					  fps);