drivers: Add support for X-Powers AXP209 PMU

Change-Id: I1de0e656a38527b172af1d0b5bcd97acbfc03bf0
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/4591
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
diff --git a/src/drivers/xpowers/axp209/Kconfig b/src/drivers/xpowers/axp209/Kconfig
new file mode 100644
index 0000000..684873c
--- /dev/null
+++ b/src/drivers/xpowers/axp209/Kconfig
@@ -0,0 +1,15 @@
+config DRIVER_XPOWERS_AXP209
+	bool
+	default n
+	help
+	  X-Powers AXP902 Power Management Unit
+
+if DRIVER_XPOWERS_AXP209
+
+config DRIVER_XPOWERS_AXP209_BOOTBLOCK
+	bool
+	default n
+	help
+	  Make AXP209 functionality available in he bootblock.
+
+endif # DRIVER_XPOWERS_AXP209