staging: hikey9xx: fix Kconfig dependency chain

Both the SPMI controller and the SPMI PMIC driver
depends on the SPMI bus support.

The dependency for the regulator is also wrong:
it should depends on the SPMI version of the HiSilicon 6421,
and not on the normal one.

Signed-off-by: Mauro Carvalho Chehab <[e-mail]>
Link: https://lore.kernel.org/r/1b7e23[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/hikey9xx/Kconfig

···
 	tristate "Hisilicon 3670 SPMI Controller"
 	select IRQ_DOMAIN_HIERARCHY
 	depends on HAS_IOMEM
+	depends on SPMI
 	help
 	  If you say yes to this option, support will be included for the
 	  built-in SPMI PMIC Arbiter interface on Hisilicon 3670
···
 config MFD_HI6421_SPMI
 	tristate "HiSilicon Hi6421v600 SPMI PMU/Codec IC"
 	depends on OF
+	depends on SPMI
 	select MFD_CORE
 	help
 	  Add support for HiSilicon Hi6421v600 SPMI PMIC. Hi6421 includes
···
 # to be placed at drivers/regulator
 config REGULATOR_HI6421V600
 	tristate "HiSilicon Hi6421v600 PMIC voltage regulator support"
-	depends on MFD_HI6421_PMIC && OF
+	depends on MFD_HI6421_SPMI && OF
 	help
 	  This driver provides support for the voltage regulators on
 	  HiSilicon Hi6421v600 PMU / Codec IC.