configs: ls2080ardb: Enable DSPI flash support

There is the stmicro DSPI flash on LS12080ARDB.
Enable DSPI flash related configure options.

Signed-off-by: Yuan Yao <yao.yuan@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/include/configs/ls2080ardb.h b/include/configs/ls2080ardb.h
index 32fa0eb..31df781 100644
--- a/include/configs/ls2080ardb.h
+++ b/include/configs/ls2080ardb.h
@@ -269,6 +269,7 @@
 #ifdef CONFIG_FSL_DSPI
 #define CONFIG_SPI_FLASH
 #define CONFIG_SPI_FLASH_BAR
+#define CONFIG_SPI_FLASH_STMICRO
 #endif
 
 /*