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/gpio/tca642x.c b/drivers/gpio/tca642x.c
index 7f67f96..b07496e 100644
--- a/drivers/gpio/tca642x.c
+++ b/drivers/gpio/tca642x.c
@@ -52,7 +52,7 @@
 	int ret;
 
 	org_bus_num = i2c_get_bus_num();
-	i2c_set_bus_num(CONFIG_SYS_I2C_TCA642X_BUS_NUM);
+	i2c_set_bus_num(CFG_SYS_I2C_TCA642X_BUS_NUM);
 
 	if (i2c_read(chip, addr, 1, (uint8_t *)&valw, 1)) {
 		printf("Could not read before writing\n");
@@ -76,7 +76,7 @@
 	int ret = 0;
 
 	org_bus_num = i2c_get_bus_num();
-	i2c_set_bus_num(CONFIG_SYS_I2C_TCA642X_BUS_NUM);
+	i2c_set_bus_num(CFG_SYS_I2C_TCA642X_BUS_NUM);
 	if (i2c_read(chip, addr, 1, (u8 *)&valw, 1)) {
 		ret = -1;
 		goto error;
@@ -242,7 +242,7 @@
 static int do_tca642x(struct cmd_tbl *cmdtp, int flag, int argc,
 		      char *const argv[])
 {
-	static uchar chip = CONFIG_SYS_I2C_TCA642X_ADDR;
+	static uchar chip = CFG_SYS_I2C_TCA642X_ADDR;
 	int ret = CMD_RET_USAGE, val;
 	int gpio_bank = 0;
 	uint8_t bank_shift;