riscv: only select serial sifive if TTY is enabled

There is some warning if TTY is not enabled, and lead to
build error, only select serial sifive if TTY enabled, and
this also makes randconfig happy.

Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
[paul.walmsley@sifive.com: updated to apply]
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>

diff --git a/arch/riscv/Kconfig.socs b/arch/riscv/Kconfig.socs
index 634759a..d325b67 100644 (file)
--- a/arch/riscv/Kconfig.socs
+++ b/arch/riscv/Kconfig.socs
@@ -2,8 +2,8 @@ menu "SoC selection"
 
 config SOC_SIFIVE
        bool "SiFive SoCs"
-       select SERIAL_SIFIVE
-       select SERIAL_SIFIVE_CONSOLE
+       select SERIAL_SIFIVE if TTY
+       select SERIAL_SIFIVE_CONSOLE if TTY
        select CLK_SIFIVE
        select CLK_SIFIVE_FU540_PRCI
        select SIFIVE_PLIC