[PATCH] ARM: bcm2835: clarify RASPBERRYPI_FIRMWARE dependency

[Arnd Bergmann]

The firmware driver can be a loadable module, but the power domain
can only be built-in, so we get a build error in an allmodconfig
kernel:

:(.text+0x17e59c): undefined reference to `rpi_firmware_property'
:(.text+0x17e51c): undefined reference to `rpi_firmware_get'
:(.text+0x17e244): undefined reference to `rpi_firmware_property'

This changes the dependency to only allow the power domain code
to be enabled when the firmware driver is built-in. Other users
of the firmware driver may still be loadable modules and not
everyone needs the power domains, so we don't change the firmware
code.

Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>

diff --git a/drivers/soc/bcm/Kconfig b/drivers/soc/bcm/Kconfig
index 5ba1827fe36f..3066edea184d 100644
--- a/drivers/soc/bcm/Kconfig
+++ b/drivers/soc/bcm/Kconfig
@@ -1,7 +1,7 @@
 config RASPBERRYPI_POWER
 	bool "Raspberry Pi power domain driver"
 	depends on ARCH_BCM2835 || COMPILE_TEST
-	depends on RASPBERRYPI_FIRMWARE
+	depends on RASPBERRYPI_FIRMWARE=y
 	select PM_GENERIC_DOMAINS if PM
 	select PM_GENERIC_DOMAINS_OF if PM
 	help
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