arm64: defconfig: Enable mem2mem drivers on Holi

Enable memory to memory multimedia driver support
to allow v4l2 rotator compilation in Holi.

Change-Id: Iaabd0c7ec6f74c0ba2cad5e4d79825339333e33f
Signed-off-by: Raviteja Tamatam <travitej@codeaurora.org>