[PATCH] serial: Add missing TPL_SYS_NS16550_SERIAL symbol

[Tom Rini]

On PowerPC platforms with TPL enabled and SPL_SYS_NS16550_SERIAL
enabled, today this builds under TPL as well due to how $(XPL_) is
defined. Add the TPL_SYS_NS16550_SERIAL itself for consistency and
clarity.

Signed-off-by: Tom Rini <trini at konsulko.com>
---
 drivers/serial/Kconfig | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index c4f4a8d78df1..84130524c2de 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -789,6 +789,12 @@ config SPL_SYS_NS16550_SERIAL
 	default y if SYS_NS16550_SERIAL || ARCH_SUNXI || ARCH_OMAP2PLUS
 	select SYS_NS16550
 
+config TPL_SYS_NS16550_SERIAL
+	bool "NS16550 UART or compatible legacy driver in TPL"
+	depends on TPL && !TPL_DM_SERIAL
+	default y if SPL_SYS_NS16550_SERIAL
+	select SYS_NS16550
+
 config SYS_NS16550
 	bool "NS16550 UART or compatible"
 	help
-- 
2.43.0