riscv: only select serial sifive if TTY is enabled

Kefeng Wang · paul-walmsley-sifive · commit bc3e8f5d42d5 · 2019-12-08T20:29:01.000-08:00
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 &lt;wangkefeng.wang@huawei.com&gt;
[paul.walmsley@sifive.com: updated to apply]
Signed-off-by: Paul Walmsley &lt;paul.walmsley@sifive.com&gt;
diff --git 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
