x86: qemu: Add build options for SPL

If SPL is used we want to use the generic SPL framework and boot
from SPI via a board-specific means. Add these options to the
board config file.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

include/configs/qemu-x86.h

@@ -53,4 +53,13 @@
 #undef CONFIG_ENV_IS_IN_SPI_FLASH
 #define CONFIG_ENV_IS_NOWHERE
 
+#define CONFIG_SPL_FRAMEWORK
+
+#define CONFIG_SPL_TEXT_BASE		0xfffd0000
+
+#define BOOT_DEVICE_SPI			10
+
+#define CONFIG_SPL_BOARD_LOAD_IMAGE
+#define BOOT_DEVICE_BOARD		11
+
 #endif	/* __CONFIG_H */