ACPI fix for 4.20-rc3

Fix a recently introduced build issue in the xpower PMIC
 driver (Arnd Bergmann).
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Merge tag 'acpi-4.20-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fix from Rafael Wysocki:
 "Fix a recently introduced build issue in the xpower PMIC driver (Arnd
  Bergmann)"

* tag 'acpi-4.20-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / PMIC: xpower: fix IOSF_MBI dependency

drivers/acpi/Kconfig

@@ -512,7 +512,7 @@ config CRC_PMIC_OPREGION
 
 config XPOWER_PMIC_OPREGION
 	bool "ACPI operation region support for XPower AXP288 PMIC"
-	depends on MFD_AXP20X_I2C && IOSF_MBI
+	depends on MFD_AXP20X_I2C && IOSF_MBI=y
 	help
 	  This config adds ACPI operation region support for XPower AXP288 PMIC.