ARM: dts: exynos: Fix invalid GIC interrupt flags in audio block of Exynos5410

Recently added audio block of Exynos5410 missed global fixup of GIC
interrupt flags.  Interrupt of type IRQ_TYPE_NONE is not allowed for GIC
interrupts so use level high.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com>