ARM: highbank: fix typos with hignbank in power request functions

s/hignbank/highbank/

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
diff --git a/arch/arm/mach-highbank/pm.c b/arch/arm/mach-highbank/pm.c
index 74aa135..0f4ffd6 100644
--- a/arch/arm/mach-highbank/pm.c
+++ b/arch/arm/mach-highbank/pm.c
@@ -32,7 +32,7 @@
 
 static int highbank_pm_enter(suspend_state_t state)
 {
-	hignbank_set_pwr_suspend();
+	highbank_set_pwr_suspend();
 	highbank_set_cpu_jump(0, cpu_resume);
 	cpu_suspend(0, highbank_suspend_finish);