treewide: fix a few typos in comments

- kenrel -> kernel
- whetehr -> whether
- ttt -> tt
- sss -> ss

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/arch/arm/mach-omap2/control.h b/arch/arm/mach-omap2/control.h
index c2804c1..a016c8b 100644
--- a/arch/arm/mach-omap2/control.h
+++ b/arch/arm/mach-omap2/control.h
@@ -236,7 +236,7 @@
 #define OMAP343X_CONTROL_WKUP_DEBOBS3 (OMAP343X_CONTROL_GENERAL_WKUP + 0x014)
 #define OMAP343X_CONTROL_WKUP_DEBOBS4 (OMAP343X_CONTROL_GENERAL_WKUP + 0x018)
 
-/* 36xx-only RTA - Retention till Accesss control registers and bits */
+/* 36xx-only RTA - Retention till Access control registers and bits */
 #define OMAP36XX_CONTROL_MEM_RTA_CTRL	0x40C
 #define OMAP36XX_RTA_DISABLE		0x0