[PATCH v2] pinctrl: scu: Depend on IMX_SCU

[Guido Günther <agx@xxxxxxxxxxx>]

Otherwise building fails with only PINCTRL_IMX_SCU selected:

    aarch64-linux-gnu-ld: drivers/pinctrl/freescale/pinctrl-scu.o: in function `imx_pinctrl_sc_ipc_init':
    pinctrl-scu.c:(.text+0x10): undefined reference to `imx_scu_get_handle'
    aarch64-linux-gnu-ld: pinctrl-scu.c:(.text+0x10): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `imx_scu_get_handle'
    aarch64-linux-gnu-ld: drivers/pinctrl/freescale/pinctrl-scu.o: in function `imx_pinconf_get_scu':
    pinctrl-scu.c:(.text+0x64): undefined reference to `imx_scu_call_rpc'
    aarch64-linux-gnu-ld: pinctrl-scu.c:(.text+0x64): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `imx_scu_call_rpc'
    aarch64-linux-gnu-ld: drivers/pinctrl/freescale/pinctrl-scu.o: in function `imx_pinconf_set_scu':
    pinctrl-scu.c:(.text+0x104): undefined reference to `imx_scu_call_rpc'
    aarch64-linux-gnu-ld: pinctrl-scu.c:(.text+0x104): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `imx_scu_call_rpc'
    make: *** [Makefile:1038: vmlinux] Error 1

Signed-off-by: Guido Günther <agx@xxxxxxxxxxx>
---
This is based on linux-next 2018-12-24.

Changes since v1:
 * Use 'depends on' instead of 'select' as suggested by Dong Aisheng.

 drivers/pinctrl/freescale/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pinctrl/freescale/Kconfig b/drivers/pinctrl/freescale/Kconfig
index f7d357910cff..d20ae4b7f996 100644
--- a/drivers/pinctrl/freescale/Kconfig
+++ b/drivers/pinctrl/freescale/Kconfig
@@ -7,6 +7,7 @@ config PINCTRL_IMX
 
 config PINCTRL_IMX_SCU
 	bool
+	depends on IMX_SCU
 	select PINCTRL_IMX
 
 config PINCTRL_IMX1_CORE
-- 
2.19.2