[bsp][renesas] add spi device option to Kconfig, disabled by default

Author: tomjielii

bsp/renesas/ra2e2-ek/board/Kconfig

@@ -53,6 +53,16 @@ menu "Hardware Drivers Config"
                     default n
             endif
 
+        menuconfig BSP_USING_SPI
+            bool "Enable hardware SPI BUS"
+            default n
+            select RT_USING_SPI
+            if BSP_USING_SPI
+                config BSP_USING_SPI0
+                    bool "Enable Hardware SPI0 BUS"
+                    default n
+            endif
+
     endmenu
 
     menu "Board extended module Drivers"