clk: mediatek: Add hardware dependency

Only propose the mediatek clock drivers on this platform, unless
build-testing.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Shunli Wang <shunli.wang@mediatek.com>
Cc: James Liao <jamesjj.liao@mediatek.com>
Cc: Erin Lo <erin.lo@mediatek.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Michael Turquette <mturquette@baylibre.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

drivers/clk/mediatek/Kconfig

@@ -8,6 +8,7 @@ config COMMON_CLK_MEDIATEK
 
 config COMMON_CLK_MT8135
 	bool "Clock driver for Mediatek MT8135"
+	depends on ARCH_MEDIATEK || COMPILE_TEST
 	select COMMON_CLK_MEDIATEK
 	default ARCH_MEDIATEK
 	---help---
@@ -15,6 +16,7 @@ config COMMON_CLK_MT8135
 
 config COMMON_CLK_MT8173
 	bool "Clock driver for Mediatek MT8173"
+	depends on ARCH_MEDIATEK || COMPILE_TEST
 	select COMMON_CLK_MEDIATEK
 	default ARCH_MEDIATEK
 	---help---