trivial: fix typos/grammar errors in Kconfig texts

Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig
index 200b9cb..9a8bb53 100644
--- a/arch/powerpc/platforms/Kconfig
+++ b/arch/powerpc/platforms/Kconfig
@@ -298,7 +298,7 @@
 config OF_RTC
 	bool
 	help
-	  Uses information from the OF or flattened device tree to instatiate
+	  Uses information from the OF or flattened device tree to instantiate
 	  platform devices for direct mapped RTC chips like the DS1742 or DS1743.
 
 source "arch/powerpc/sysdev/bestcomm/Kconfig"