rtc kconfig clarification

Make drivers/rtc/Kconfig be clearer about what the various "interfaces"
actually mean, by showing path names.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 95ce8f4..4e4c10a 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -59,7 +59,7 @@
 	depends on RTC_CLASS
 
 config RTC_INTF_SYSFS
-	boolean "sysfs"
+	boolean "/sys/class/rtc/rtcN (sysfs)"
 	depends on RTC_CLASS && SYSFS
 	default RTC_CLASS
 	help
@@ -70,7 +70,7 @@
 	  will be called rtc-sysfs.
 
 config RTC_INTF_PROC
-	boolean "proc"
+	boolean "/proc/driver/rtc (procfs for rtc0)"
 	depends on RTC_CLASS && PROC_FS
 	default RTC_CLASS
 	help
@@ -82,7 +82,7 @@
 	  will be called rtc-proc.
 
 config RTC_INTF_DEV
-	boolean "dev"
+	boolean "/dev/rtcN (character devices)"
 	depends on RTC_CLASS
 	default RTC_CLASS
 	help