hal: renesas: rx: Add support for SPI driver on RX devices

Add SPI driver support with r_rspi on the rdp for RX devices

Signed-off-by: Quy Tran <[email protected]>

Author: quytranpzz

drivers/rx/CMakeLists.txt

@@ -81,3 +81,12 @@ if(CONFIG_USE_RX_RDP_FLASH)
 		)
 	endif()
 endif()
+
+if(CONFIG_USE_RX_RDP_RSPI)
+	zephyr_library_sources(
+		rdp/src/r_rspi_rx/src/r_rspi_rx.c
+	)
+	zephyr_include_directories(
+		rdp/src/r_rspi_rx/src
+		rdp/src/r_rspi_rx)
+endif()