ARM: SAMSUNG: Add IRQ_I2S0 definition

To handle i2s0 interrupt and To fix compilation error
adds IRQ_I2S0 for exynos4, s3c64xx, s5p64x0

Signed-off-by: Sangbeom Kim <sbkim73@samsung.com>
[kgene.kim@samsung.com: Fixed build failure due to inclusion]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>