fpga: altera: Rename Stratix10 FPGA to Intel FPGA SDM Mailbox

Rename Stratix10 FPGA driver to Intel FPGA SDM Mailbox driver
because it is using generic SDM (Secure Device Manager) Mailbox
interface shared by other platform (e.g. Agilex) as well.

Signed-off-by: Chee Hong Ang <chee.hong.ang@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>
diff --git a/arch/arm/mach-socfpga/Kconfig b/arch/arm/mach-socfpga/Kconfig
index a3699e8..3254991 100644
--- a/arch/arm/mach-socfpga/Kconfig
+++ b/arch/arm/mach-socfpga/Kconfig
@@ -79,7 +79,7 @@
 	select ARMV8_MULTIENTRY
 	select ARMV8_SET_SMPEN
 	select ARMV8_SPIN_TABLE
-	select FPGA_STRATIX10
+	select FPGA_INTEL_SDM_MAILBOX
 
 choice
 	prompt "Altera SOCFPGA board select"