[PATCHv2] clk: thead: allow COMPILE_TEST builds

[Rosen Penev]

Follow the pattern of many other directories in this Makefile (sunxi-ng,
tenstorrent, ti, etc.) by using obj-y. This allows COMPILE_TEST to
select the driver without having CONFIG_ARCH_THEAD enabled

Tested with:
make LLVM=1 ARCH=loongarch drivers/clk/thead/

Assisted-by: Codex:GPT-5.5
Signed-off-by: Rosen Penev <rosenp@xxxxxxxxx>
---
 v2: use obj-y
 drivers/clk/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index f6a71fd6d872..bbcedf5d60ea 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -157,7 +157,7 @@ obj-$(CONFIG_ARCH_SUNXI)		+= sunxi/
 obj-y					+= sunxi-ng/
 obj-$(CONFIG_CLK_TEGRA)			+= tegra/
 obj-y					+= tenstorrent/
-obj-$(CONFIG_ARCH_THEAD)		+= thead/
+obj-y					+= thead/
 obj-y					+= ti/
 obj-$(CONFIG_CLK_UNIPHIER)		+= uniphier/
 obj-$(CONFIG_ARCH_U8500)		+= ux500/
-- 
2.55.0