arm: powerpc: Tidy up code style for interrupt functions

Remove the unwanted space before the bracket.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/powerpc/cpu/mpc83xx/interrupts.c b/arch/powerpc/cpu/mpc83xx/interrupts.c
index 520c2c3..04cd147 100644
--- a/arch/powerpc/cpu/mpc83xx/interrupts.c
+++ b/arch/powerpc/cpu/mpc83xx/interrupts.c
@@ -35,7 +35,7 @@
  * Handle external interrupts
  */
 
-void external_interrupt (struct pt_regs *regs)
+void external_interrupt(struct pt_regs *regs)
 {
 }
 
@@ -45,12 +45,12 @@
  */
 
 void
-irq_install_handler (int irq, interrupt_handler_t * handler, void *arg)
+irq_install_handler(int irq, interrupt_handler_t * handler, void *arg)
 {
 }
 
 
-void irq_free_handler (int irq)
+void irq_free_handler(int irq)
 {
 }