global: Rename SPL_ to XPL_
Use XPL_ as the symbol to indicate an SPL build. This means that SPL_ is
no-longer set.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/mailbox/Makefile b/drivers/mailbox/Makefile
index 59e8d0d..6072fa1 100644
--- a/drivers/mailbox/Makefile
+++ b/drivers/mailbox/Makefile
@@ -3,7 +3,7 @@
# Copyright (c) 2016, NVIDIA CORPORATION.
#
-obj-$(CONFIG_$(SPL_)DM_MAILBOX) += mailbox-uclass.o
+obj-$(CONFIG_$(XPL_)DM_MAILBOX) += mailbox-uclass.o
obj-$(CONFIG_APPLE_MBOX) += apple-mbox.o
obj-$(CONFIG_SANDBOX_MBOX) += sandbox-mbox.o
obj-$(CONFIG_SANDBOX_MBOX) += sandbox-mbox-test.o