power: Move as3722 pmic to pmic/ directory

Most of the PMICs are in the drivers/power/pmic/ directory. Move this one
there.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile
index 40240c7..5f1bef3 100644
--- a/drivers/power/pmic/Makefile
+++ b/drivers/power/pmic/Makefile
@@ -12,6 +12,7 @@
 obj-$(CONFIG_PMIC_S2MPS11) += s2mps11.o
 obj-$(CONFIG_DM_PMIC_SANDBOX) += sandbox.o i2c_pmic_emul.o
 obj-$(CONFIG_PMIC_ACT8846) += act8846.o
+obj-$(CONFIG_PMIC_AS3722) += as3722.o
 obj-$(CONFIG_PMIC_MAX8997) += max8997.o
 obj-$(CONFIG_PMIC_PM8916) += pm8916.o
 obj-$(CONFIG_PMIC_RK808) += rk808.o