power: Rename CONFIG_PMIC_... to CONFIG_POWER_...

Commit be3b51aa did this mostly, but several have been added since. Do the
job again.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/include/configs/mx35pdk.h b/include/configs/mx35pdk.h
index 0a46f4c..ab48144 100644
--- a/include/configs/mx35pdk.h
+++ b/include/configs/mx35pdk.h
@@ -52,7 +52,7 @@
 #define CONFIG_POWER
 #define CONFIG_POWER_I2C
 #define CONFIG_POWER_FSL
-#define CONFIG_PMIC_FSL_MC13892
+#define CONFIG_POWER_FSL_MC13892
 #define CONFIG_SYS_FSL_PMIC_I2C_ADDR	0x08
 #define CONFIG_RTC_MC13XXX