global: Move remaining CONFIG_SYS_* to CFG_SYS_*

The rest of the unmigrated CONFIG symbols in the CONFIG_SYS namespace do
not easily transition to Kconfig. In many cases they likely should come
from the device tree instead. Move these out of CONFIG namespace and in
to CFG namespace.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/rtc/pcf8563.c b/drivers/rtc/pcf8563.c
index 19faefb..91a4124 100644
--- a/drivers/rtc/pcf8563.c
+++ b/drivers/rtc/pcf8563.c
@@ -111,12 +111,12 @@
 
 static uchar rtc_read (uchar reg)
 {
-	return (i2c_reg_read (CONFIG_SYS_I2C_RTC_ADDR, reg));
+	return (i2c_reg_read (CFG_SYS_I2C_RTC_ADDR, reg));
 }
 
 static void rtc_write (uchar reg, uchar val)
 {
-	i2c_reg_write (CONFIG_SYS_I2C_RTC_ADDR, reg, val);
+	i2c_reg_write (CFG_SYS_I2C_RTC_ADDR, reg, val);
 }
 #else
 static int pcf8563_rtc_get(struct udevice *dev, struct rtc_time *tmp)