Fix typos in Documentation/: 'N'-'P'

This patch fixes typos in various Documentation txts. The patch addresses
some words starting with the letters 'N'-'P'.

Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/Documentation/sparc/sbus_drivers.txt b/Documentation/sparc/sbus_drivers.txt
index 4b93516..7ac0695 100644
--- a/Documentation/sparc/sbus_drivers.txt
+++ b/Documentation/sparc/sbus_drivers.txt
@@ -25,8 +25,8 @@
 used members of this structure, and their typical usage,
 will be detailed below.
 
-	Here is a piece of skeleton code for perofming a device
-probe in an SBUS driverunder Linux:
+	Here is a piece of skeleton code for performing a device
+probe in an SBUS driver under Linux:
 
 	static int __devinit mydevice_probe_one(struct sbus_dev *sdev)
 	{