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/include/i2c.h b/include/i2c.h
index c07e60b..51390f8 100644
--- a/include/i2c.h
+++ b/include/i2c.h
@@ -633,10 +633,10 @@
  */
 #define I2C_RXTX_LEN	128	/* maximum tx/rx buffer length */
 
-#if !defined(CONFIG_SYS_I2C_MAX_HOPS)
+#if !defined(CFG_SYS_I2C_MAX_HOPS)
 /* no muxes used bus = i2c adapters */
 #define CONFIG_SYS_I2C_DIRECT_BUS	1
-#define CONFIG_SYS_I2C_MAX_HOPS		0
+#define CFG_SYS_I2C_MAX_HOPS		0
 #define CFG_SYS_NUM_I2C_BUSES	ll_entry_count(struct i2c_adapter, i2c)
 #else
 /* we use i2c muxes */
@@ -644,8 +644,8 @@
 #endif
 
 /* define the I2C bus number for RTC and DTT if not already done */
-#if !defined(CONFIG_SYS_RTC_BUS_NUM)
-#define CONFIG_SYS_RTC_BUS_NUM		0
+#if !defined(CFG_SYS_RTC_BUS_NUM)
+#define CFG_SYS_RTC_BUS_NUM		0
 #endif
 
 struct i2c_adapter {
@@ -705,7 +705,7 @@
 
 struct i2c_bus_hose {
 	int	adapter;
-	struct i2c_next_hop	next_hop[CONFIG_SYS_I2C_MAX_HOPS];
+	struct i2c_next_hop	next_hop[CFG_SYS_I2C_MAX_HOPS];
 };
 #define I2C_NULL_HOP	{{-1, ""}, 0, 0}
 extern struct i2c_bus_hose	i2c_bus[];
@@ -931,12 +931,12 @@
  * completely to new multibus support.
  */
 #if CONFIG_IS_ENABLED(SYS_I2C_LEGACY) || defined(CONFIG_I2C_MULTI_BUS)
-# if !defined(CONFIG_SYS_MAX_I2C_BUS)
-#  define CONFIG_SYS_MAX_I2C_BUS		2
+# if !defined(CFG_SYS_MAX_I2C_BUS)
+#  define CFG_SYS_MAX_I2C_BUS		2
 # endif
 # define I2C_MULTI_BUS				1
 #else
-# define CONFIG_SYS_MAX_I2C_BUS		1
+# define CFG_SYS_MAX_I2C_BUS		1
 # define I2C_MULTI_BUS				0
 #endif