ARM: S5PV310: Update MAX_COMBINER_NR

This patch updates MAX_COMBINER_NR from 39 to 40 because
S5PV310 need 39th combiner for including EINT16_31.

Signed-off-by: Jongpill Lee <boyko.lee@samsung.com>
Signed-off-by: Sangbeom Kim <sbkim73@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>