mfd: 8821: Add support for pm8821 core driver

Add support for the Qualcomm PM8821 PMIC chip. The core driver
will communicate with the PMIC chip via the MSM SSBI bus.

Initial support is provided for: IRQ, MPP, and Debug

Signed-off-by: Jay Chokshi <jchokshi@codeaurora.org>
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index ce8ec0e..fd31487 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -775,6 +775,21 @@
 	  Say M here if you want to include support for PM8921 chip as a module.
 	  This will build a module called "pm8921-core".
 
+config MFD_PM8821_CORE
+	tristate "Qualcomm PM8821 PMIC chip"
+	depends on MSM_SSBI
+	select MFD_CORE
+	select MFD_PM8XXX
+	help
+	  If you say yes to this option, support will be included for the
+	  built-in PM8821 PMIC chip.
+
+	  This is required if your board has a PM8821 and uses its features,
+	  such as: MPPs, and interrupts.
+
+	  Say M here if you want to include support for PM8821 chip as a module.
+	  This will build a module called "pm8821-core".
+
 config MFD_PM8XXX_IRQ
 	bool "Support for Qualcomm PM8xxx IRQ features"
 	depends on MFD_PM8XXX