typo fixes

Most of these fixes were already submitted for old kernel versions, and were
approved, but for some reason they never made it into the releases.

Because this is a consolidation of a couple old missed patches, it touches both
Kconfigs and documentation texts.

Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 4cee938..a0cdaaf 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -851,7 +851,7 @@
 	help
 	  kexec is a system call that implements the ability to shutdown your
 	  current kernel, and to start another kernel.  It is like a reboot
-	  but it is indepedent of the system firmware.   And like a reboot
+	  but it is independent of the system firmware.   And like a reboot
 	  you can start any kernel with it, not just Linux.
 
 	  It is an ongoing process to be certain the hardware in a machine