Convert CONFIG_POWER_LTC3676 et al to Kconfig

This converts the following to Kconfig:
   CONFIG_POWER_FSL
   CONFIG_POWER_FSL_MC13892
   CONFIG_POWER_HI6553
   CONFIG_POWER_LTC3676
   CONFIG_POWER_PFUZE100
   CONFIG_POWER_PFUZE3000
   CONFIG_POWER_SPI
   CONFIG_POWER_TPS65090_EC
   CONFIG_POWER_TPS65218
   CONFIG_POWER_TPS65910

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/pico-nymph-imx7d_defconfig b/configs/pico-nymph-imx7d_defconfig
index 8213578..46777e0 100644
--- a/configs/pico-nymph-imx7d_defconfig
+++ b/configs/pico-nymph-imx7d_defconfig
@@ -81,6 +81,7 @@
 CONFIG_PINCTRL=y
 CONFIG_PINCTRL_IMX7=y
 CONFIG_POWER_LEGACY=y
+CONFIG_POWER_PFUZE3000=y
 CONFIG_POWER_I2C=y
 CONFIG_MXC_UART=y
 CONFIG_IMX_THERMAL=y