[SPARC]: Spelling fixes.

Spelling fixes in arch/sparc/.

Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/sun4m_irq.c b/arch/sparc/kernel/sun4m_irq.c
index a654c16..91a803e 100644
--- a/arch/sparc/kernel/sun4m_irq.c
+++ b/arch/sparc/kernel/sun4m_irq.c
@@ -299,7 +299,7 @@
 		struct tt_entry *trap_table = &sparc_ttable[SP_TRAP_IRQ1 + (14 - 1)];
 
 		/* For SMP we use the level 14 ticker, however the bootup code
-		 * has copied the firmwares level 14 vector into boot cpu's
+		 * has copied the firmware's level 14 vector into the boot cpu's
 		 * trap table, we must fix this now or we get squashed.
 		 */
 		local_irq_save(flags);