forked from Mirrors/opensbi

To allow clients query service group version of a RPMI mailbox channel, implement get_attribute() callback for the RPMI shared memory mailbox controller. Signed-off-by: Anup Patel <apatel@ventanamicro.com>
To allow clients query service group version of a RPMI mailbox channel, implement get_attribute() callback for the RPMI shared memory mailbox controller. Signed-off-by: Anup Patel <apatel@ventanamicro.com>