ANDROID: KVM: arm64: iommu: Pass device specific flags to hypervisor

We need to pass some device specific flags that are detected from EL1
(as built-in sync device) to the hypervisor. The flags are defined
by the driver but hosted in the main iommu struct.

As we use SMCCC1.1 we only have 7 args, which were already used, so
mem_size is removed as it really not needed as all page donations
are 1 page. so passing the base address is enough.

Bug: 255266847
Change-Id: I14e6d2573d7a822334455999aa9fd6f01ac97450
Signed-off-by: Mostafa Saleh <smostafa@google.com>