scripts: remove CONFIG_IS_ENABLED and CONFIG_VAL in config_whitelist.txt

The helper macro CONFIG_IS_ENABLED and CONFIG_VAL are not real
configurations and they are no more present in u-boot.cfg so they can
be removed in config_whitelist.txt.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/scripts/config_whitelist.txt b/scripts/config_whitelist.txt
index 50dd3f9..e2cf73c 100644
--- a/scripts/config_whitelist.txt
+++ b/scripts/config_whitelist.txt
@@ -633,7 +633,6 @@
 CONFIG_IRAM_STACK
 CONFIG_IRAM_TOP
 CONFIG_IRDA_BASE
-CONFIG_IS_ENABLED
 CONFIG_JFFS2_DEV
 CONFIG_JFFS2_LZO
 CONFIG_JFFS2_NAND
@@ -3042,7 +3041,6 @@
 CONFIG_UTBIPAR_INIT_TBIPA
 CONFIG_U_BOOT_HDR_ADDR
 CONFIG_U_BOOT_HDR_SIZE
-CONFIG_VAL
 CONFIG_VAR_SIZE_SPL
 CONFIG_VERY_BIG_RAM
 CONFIG_VIDEO_BCM2835