x86: spl: Print the error on SPL failure

The error code is often useful to figure out what is going on. Printing it
does not increase code size much, so print out the error and then hang.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/arch/x86/lib/spl.c b/arch/x86/lib/spl.c
index b6f9a70..cf22fa2 100644
--- a/arch/x86/lib/spl.c
+++ b/arch/x86/lib/spl.c
@@ -164,8 +164,8 @@
 
 	ret = x86_spl_init();
 	if (ret) {
-		debug("Error %d\n", ret);
-		panic("x86_spl_init fail");
+		printf("x86_spl_init: error %d\n", ret);
+		hang();
 	}
 #if IS_ENABLED(CONFIG_TPL) || IS_ENABLED(CONFIG_SYS_COREBOOT)
 	gd->bd = malloc(sizeof(*gd->bd));