serial/sifive: select SERIAL_EARLYCON

The sifive serial driver implements earlycon support, but unless
another driver is built in that supports earlycon support it won't
be usable.  Explicitly select SERIAL_EARLYCON instead.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Paul Walmsley <paul.walmsley@sifive.com>
Link: https://lore.kernel.org/r/20190910055923.28384-1-hch@lst.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index 4789b5d62f6379cf7709295089ece2a2ac79cc86..67a9eb3f94cecccef0cff08c1fe47bf1638ba689 100644 (file)
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -1032,6 +1032,7 @@ config SERIAL_SIFIVE_CONSOLE
        bool "Console on SiFive UART"
        depends on SERIAL_SIFIVE=y
        select SERIAL_CORE_CONSOLE
+       select SERIAL_EARLYCON
        help
          Select this option if you would like to use a SiFive UART as the
          system console.