clk: keystone: fix compile testing

Some keystone clock drivers can be selected when COMPILE_TEST is
enabled but since commit b745c07 ("clk: keystone: Add sci-clk
driver support") they are never actually built.

Enable compile testing by allowing the build system to process the
keystone drivers.

Fixes: b745c07 ("clk: keystone: Add sci-clk driver support")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

Author: jhovold

drivers/clk/Makefile

@@ -125,8 +125,7 @@ obj-$(CONFIG_ARCH_HISI)			+= hisilicon/
 obj-y					+= imgtec/
 obj-y					+= imx/
 obj-y					+= ingenic/
-obj-$(CONFIG_ARCH_K3)			+= keystone/
-obj-$(CONFIG_ARCH_KEYSTONE)		+= keystone/
+obj-y					+= keystone/
 obj-y					+= mediatek/
 obj-$(CONFIG_ARCH_MESON)		+= meson/
 obj-y					+= microchip/