[PATCH] clk: thead: allow COMPILE_TEST builds

[Rosen Penev <rosenp@gmail.com>]

CLK_THEAD_TH1520_AP already allows COMPILE_TEST, but the parent clock
Makefile only descends into drivers/clk/thead for ARCH_THEAD.  Use the
TH1520 AP clock symbol for the directory gate instead.

This lets the driver build on other 64-bit architectures selected for
compile testing without selecting the T-HEAD platform.

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

Assisted-by: Codex:GPT-5.5
Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/clk/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index 68145ad91035..d651e4ed3462 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-$(CONFIG_ARCH_THEAD)		+= thead/
+obj-$(CONFIG_CLK_THEAD_TH1520_AP)	+= thead/
 obj-y					+= ti/
 obj-$(CONFIG_CLK_UNIPHIER)		+= uniphier/
 obj-$(CONFIG_ARCH_U8500)		+= ux500/
-- 
2.54.0