ARM: dts: s5pv210: use defines for IRQ flags in SMDKV210

[ Upstream commit c272f1cc ]

Replace hard-coded flags with defines for readability.  No functional
change.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200907161141.31034-19-krzk@kernel.org


Stable-dep-of: 982655cb ("ARM: dts: samsung: s5pv210-smdkv210: correct ethernet reg addresses (split)")
Signed-off-by: Sasha Levin <sashal@kernel.org>