move frv docs one level up

My first guess for "fujitsu" was it might be related to the
fujitsu-laptop.c driver...

Move the frv directory one level up since frv is the name of the
architecture in the Linux kernel.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
diff --git a/Documentation/00-INDEX b/Documentation/00-INDEX
index 970807f..40ac775 100644
--- a/Documentation/00-INDEX
+++ b/Documentation/00-INDEX
@@ -154,7 +154,7 @@
 	- request_firmware() hotplug interface info.
 floppy.txt
 	- notes and driver options for the floppy disk driver.
-fujitsu/
+frv/
 	- Fujitsu FR-V Linux documentation.
 gpio.txt
 	- overview of GPIO (General Purpose Input/Output) access conventions.