ARM: dts: omap3-igep0020: use standard constant for IRQ flags
ARM: dts: omap3-igep0020: use standard constant for IRQ flags

Commit 840ef8b7 ("ARM: dt: add header to define IRQ flags") added
constants for IRQ edge/level triggered types so use it instead of
a magic number to enhance the DT readability.

Signed-off-by: Javier Martinez Canillas <039000e09e601bba70626bd0fbe59654c9cf8cac@collabora.co.uk>
Signed-off-by: Benoit Cousson <8341a8614128d333cb43eedf99ddd6472c68ff67@baylibre.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs