[PATCH] drivers: soc: Fix COMPILE_TEST for IMX SCU

[Vincenzo Frascino]

IMX SCU SoCs support COMPILE_TEST that allows to compile the driver on a
different platform for development purposes.
These SoCs depend on a firmware interface that is not built on COMPILE_TEST
mode. This results in triggering the following errors at compile time (on
arm64):

aarch64-none-linux-gnu-ld:
drivers/soc/imx/soc-imx-scu.o: in function `imx_scu_soc_probe':
soc-imx-scu.c:(.text+0x24): undefined reference to `imx_scu_get_handle'
aarch64-none-linux-gnu-ld:
soc-imx-scu.c:(.text+0xac): undefined reference to `imx_scu_call_rpc'
aarch64-none-linux-gnu-ld:
soc-imx-scu.c:(.text+0xd8): undefined reference to `imx_scu_call_rpc'
linux/Makefile:1078: recipe for target 'vmlinux' failed
make[1]: *** [vmlinux] Error 1
Makefile:180: recipe for target 'sub-make' failed
make: *** [sub-make] Error 2

Enable the relevant compilation units in the Makefile when the config option
is selected to address the issue.

Cc: Shawn Guo <shawnguo@xxxxxxxxxx>
Cc: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@xxxxxxx>
---
 drivers/firmware/imx/Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/firmware/imx/Makefile b/drivers/firmware/imx/Makefile
index 08bc9ddfbdfb..5604adae31d9 100644
--- a/drivers/firmware/imx/Makefile
+++ b/drivers/firmware/imx/Makefile
@@ -2,3 +2,5 @@
 obj-$(CONFIG_IMX_DSP)		+= imx-dsp.o
 obj-$(CONFIG_IMX_SCU)		+= imx-scu.o misc.o imx-scu-irq.o
 obj-$(CONFIG_IMX_SCU_PD)	+= scu-pd.o
+
+obj-$(CONFIG_COMPILE_TEST)	+= imx-scu.o misc.o imx-scu-irq.o
-- 
2.25.1