ARM: davinci_all_defconfig: support systemd

CONFIG_FHANDLE is required by systemd[1], which is the
default init system in more and more distributions.
So lets enable it for DaVinci platforms as well.

While at it, remove stale entry CONFIG_INOTIFY=y

[1] https://github.com/systemd/systemd/blob/master/README#L37

Acked-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>