firmware: stratix10-svc: add the compatible value for intel agilex

Add the compatible property value so we can reuse Intel Stratix10
Service Layer driver on Intel Agilex SoC platform.

Signed-off-by: Richard Gong <richard.gong@intel.com>
Acked-by: Moritz Fischer <mdf@kernel.org>
Link: https://lore.kernel.org/r/1583428346-13307-2-git-send-email-richard.gong@linux.intel.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>