platform/surface: Disable for RISC-V

With CONFIG_ACPI enabled for RISC-V, this driver gets enabled
in allmodconfig build. However, RISC-V doesn't support sub-word
atomics which is used by this driver and hence allmodconfig
build will fail.

There is currently no plan to support this driver for RISC-V. So,
disable this driver for RISC-V even when ACPI is enabled.
Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Acked-by: Maximilian Luz <luzmaximilian@gmail.com>
Link: https://lore.kernel.org/r/20230515054928.2079268-3-sunilvl@ventanamicro.comSigned-off-by: Palmer Dabbelt <palmer@rivosinc.com>

drivers/platform/surface/aggregator/Kconfig

@@ -4,7 +4,7 @@
 menuconfig SURFACE_AGGREGATOR
 	tristate "Microsoft Surface System Aggregator Module Subsystem and Drivers"
 	depends on SERIAL_DEV_BUS
-	depends on ACPI
+	depends on ACPI && !RISCV
 	select CRC_CCITT
 	help
 	  The Surface System Aggregator Module (Surface SAM or SSAM) is an