configs: migrate CONFIG_IMX_THERMAL to defconfigs

Done via moveconfig.py

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/mx6slevk_defconfig b/configs/mx6slevk_defconfig
index 171941a..5fd78c3 100644
--- a/configs/mx6slevk_defconfig
+++ b/configs/mx6slevk_defconfig
@@ -63,6 +63,7 @@
 CONFIG_DM_SPI=y
 CONFIG_MXC_SPI=y
 CONFIG_DM_THERMAL=y
+CONFIG_IMX_THERMAL=y
 CONFIG_USB=y
 CONFIG_DM_USB=y
 CONFIG_USB_STORAGE=y