spmi: Only use Hikey 970 SPMI controller driver when ARM64

SPMI_HISI3670, the Hikey 970 SPMI controller driver, is only
required to use the Kirin 970 SPMI bus.

And the Kirin 970 is an ARM64-based SoC, it cannot be used on
platforms of other architectures.

Link: https://lore.kernel.org/all/b4810f476e41e7de4efdf28b42472ae4ffe7defe.1597647359.git.mchehab+huawei@kernel.org/
Reported-by: Wentao Guan <[email protected]>
Closes: deepin-community/kernel#604
Signed-off-by: WangYuli <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Stephen Boyd <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: Avenger-285714

drivers/spmi/Kconfig

@@ -14,6 +14,7 @@ if SPMI
 config SPMI_HISI3670
 	tristate "Hisilicon 3670 SPMI Controller"
 	select IRQ_DOMAIN_HIERARCHY
+	depends on ARM64 || COMPILE_TEST
 	depends on HAS_IOMEM
 	help
 	  If you say yes to this option, support will be included for the