ARM: dts: AM33XX: Fix AES interrupt number

AES interrupts were previously not used, but after recent changes
to omap-aes driver, its being used.
Correct the interrupt number to have working PIO mode.

Signed-off-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>