ARM: dts: da850: There are 101 interrupts.

Fix off by one error in da850 device tree in
the number of INTC interrupts.

Signed-off-by: David Lechner <david@lechnology.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
[nsekhar@ti.com: commit message update]
Signed-off-by: Sekhar Nori <nsekhar@ti.com>