[ARM] mmp: update mmp2 defconfig

Enable MAX8649 & MAX8925 regulator, dynamic debug, Marvell Jasper platform.
Disable DNOTIFY, MAX8660 regulator, 88pm860x PMIC.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>