ARM: multi_v7_defconfig: Enable more drivers for LS1021A

This patch enables more drivers for LS1021A, such as FlexCAN, IFC, SATA,
PCIE, DCU, RTC, CAAM and Virtualization.

[leo: FlexCAN and DCU were enabled as 'm' in upstream.]
[Aisheng: fix minor conflict against next-20191209 ]
Signed-off-by: Alison Wang <alison.wang@nxp.com>