[PATCH] rtc subsystem: use ENOIOCTLCMD and ENOTTY where appropriate

Appropriately use -ENOIOCTLCMD and -ENOTTY when the ioctl is not
implemented by a driver.

(akpm: we're not allowed to return -ENOIOCTLCMD to userspace.  This patch does
the right thing).

Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --cc drivers/rtc/rtc-dev.c
Simple merge

diff --cc drivers/rtc/rtc-sa1100.c
Simple merge

diff --cc drivers/rtc/rtc-test.c
Simple merge

diff --cc drivers/rtc/rtc-vr41xx.c
Simple merge