Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/arch/arm/plat-s5p/irq-gpioint.c b/arch/arm/plat-s5p/irq-gpioint.c
index 46dd078..cd6d67c 100644
--- a/arch/arm/plat-s5p/irq-gpioint.c
+++ b/arch/arm/plat-s5p/irq-gpioint.c
@@ -208,7 +208,7 @@
 	}
 
 	/*
-	 * chained GPIO irq has been sucessfully registered, allocate new gpio
+	 * chained GPIO irq has been successfully registered, allocate new gpio
 	 * int group and assign irq nubmers
 	 */