sh: Fixup cpu_data references for the non-boot CPUs.

There are a lot of bogus cpu_data-> references that only end up working
for the boot CPU, convert these to current_cpu_data to fixup SMP.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/kernel/signal.c b/arch/sh/kernel/signal.c
index 379c88b..32f10a0 100644
--- a/arch/sh/kernel/signal.c
+++ b/arch/sh/kernel/signal.c
@@ -127,7 +127,7 @@
 {
 	struct task_struct *tsk = current;
 
-	if (!(cpu_data->flags & CPU_HAS_FPU))
+	if (!(current_cpu_data.flags & CPU_HAS_FPU))
 		return 0;
 
 	set_used_math();
@@ -140,7 +140,7 @@
 {
 	struct task_struct *tsk = current;
 
-	if (!(cpu_data->flags & CPU_HAS_FPU))
+	if (!(current_cpu_data.flags & CPU_HAS_FPU))
 		return 0;
 
 	if (!used_math()) {
@@ -181,7 +181,7 @@
 #undef COPY
 
 #ifdef CONFIG_SH_FPU
-	if (cpu_data->flags & CPU_HAS_FPU) {
+	if (current_cpu_data.flags & CPU_HAS_FPU) {
 		int owned_fp;
 		struct task_struct *tsk = current;