Fix misspellings collected by members of KJ list.

Fix the misspellings of "propogate", "writting" and (oh, the shame
:-) "kenrel" in the source tree.

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/arch/powerpc/oprofile/op_model_cell.c b/arch/powerpc/oprofile/op_model_cell.c
index 626b29f..c29293b 100644
--- a/arch/powerpc/oprofile/op_model_cell.c
+++ b/arch/powerpc/oprofile/op_model_cell.c
@@ -747,7 +747,7 @@
 		 * counter value etc.) are not copied to the actual registers
 		 * until the performance monitor is enabled.  In order to get
 		 * this to work as desired, the permormance monitor needs to
-		 * be disabled while writting to the latches.  This is a
+		 * be disabled while writing to the latches.  This is a
 		 * HW design issue.
 		 */
 		cbe_enable_pm(cpu);
diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c
index 4d58258..d8bfe31 100644
--- a/arch/x86_64/kernel/io_apic.c
+++ b/arch/x86_64/kernel/io_apic.c
@@ -1413,7 +1413,7 @@
 
 	/*
 	 * We must acknowledge the irq before we move it or the acknowledge will
-	 * not propogate properly.
+	 * not propagate properly.
 	 */
 	ack_APIC_irq();