power: Rename CONFIG_POWER_TPS65217 with CONFIG_PMIC_TPS65217

Up till now the CONFIG_POWER_TPS65217 has been defined in several header
files for am335x SoC.

This patch renames it to CONFIG_PMIC_TPS65217, which better reflects the
role of this IC circuit.

Moreover, new CONFIG_PMIC_TPS65217 has been introduced in Kconfig
to be used with boards, which both support DM_PMIC and DM_I2C.

Signed-off-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
[trini: Migrate all other platforms as well]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/am335x_sl50_defconfig b/configs/am335x_sl50_defconfig
index c71741c..41017de 100644
--- a/configs/am335x_sl50_defconfig
+++ b/configs/am335x_sl50_defconfig
@@ -68,6 +68,7 @@
 CONFIG_PHY_SMSC=y
 CONFIG_MII=y
 CONFIG_DRIVER_TI_CPSW=y
+CONFIG_PMIC_TPS65217=y
 CONFIG_SPI=y
 CONFIG_DM_SPI=y
 CONFIG_OMAP3_SPI=y