global: Move remaining CONFIG_SYS_NUM_* to CFG_SYS_NUM_*

The rest of the unmigrated CONFIG symbols in the CONFIG_SYS_NUM
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/README b/README
index 9086207..efb1d37 100644
--- a/README
+++ b/README
@@ -923,7 +923,7 @@
 		with a list of GPIO LEDs that have inverted polarity.
 
 - I2C Support:
-		CONFIG_SYS_NUM_I2C_BUSES
+		CFG_SYS_NUM_I2C_BUSES
 		Hold the number of i2c buses you want to use.
 
 		CONFIG_SYS_I2C_DIRECT_BUS
@@ -940,7 +940,7 @@
 		hold a list of buses you want to use, only used if
 		CONFIG_SYS_I2C_DIRECT_BUS is not defined, for example
 		a board with CONFIG_SYS_I2C_MAX_HOPS = 1 and
-		CONFIG_SYS_NUM_I2C_BUSES = 9:
+		CFG_SYS_NUM_I2C_BUSES = 9:
 
 		 CONFIG_SYS_I2C_BUSES	{{0, {I2C_NULL_HOP}}, \
 					{0, {{I2C_MUX_PCA9547, 0x70, 1}}}, \