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/arm/cpu/sa1100/cpu.c b/arch/arm/cpu/sa1100/cpu.c
index 6a849ff..17c01dd 100644
--- a/arch/arm/cpu/sa1100/cpu.c
+++ b/arch/arm/cpu/sa1100/cpu.c
@@ -30,7 +30,7 @@
 	 * just disable everything that can disturb booting linux
 	 */
 
-	disable_interrupts ();
+	disable_interrupts();
 
 	/* turn off I-cache */
 	icache_disable();