[POWERPC] Typo fixes interrrupt -> interrupt

This fixes some interrrupt -> interrupt typos.

Signed-off-by: Gabriel Craciunescu <nix.or.die@googlemail.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/platforms/embedded6xx/holly.c

@@ -135,7 +135,7 @@ static void __init holly_setup_arch(void)
 }
 
 /*
- * Interrupt setup and service.  Interrrupts on the holly come
+ * Interrupt setup and service.  Interrupts on the holly come
  * from the four external INT pins, PCI interrupts are routed via
  * PCI interrupt control registers, it generates internal IRQ23
  *

arch/powerpc/platforms/embedded6xx/linkstation.c

@@ -99,7 +99,7 @@ static void __init linkstation_setup_arch(void)
 }
 
 /*
- * Interrupt setup and service.  Interrrupts on the linkstation come
+ * Interrupt setup and service.  Interrupts on the linkstation come
  * from the four PCI slots plus onboard 8241 devices: I2C, DUART.
  */
 static void __init linkstation_init_IRQ(void)

arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c

@@ -91,7 +91,7 @@ static void __init mpc7448_hpc2_setup_arch(void)
 }
 
 /*
- * Interrupt setup and service.  Interrrupts on the mpc7448_hpc2 come
+ * Interrupt setup and service.  Interrupts on the mpc7448_hpc2 come
  * from the four external INT pins, PCI interrupts are routed via
  * PCI interrupt control registers, it generates internal IRQ23
  *