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/configs/lacie_kw.h b/include/configs/lacie_kw.h
index 9b70eed..828f910 100644
--- a/include/configs/lacie_kw.h
+++ b/include/configs/lacie_kw.h
@@ -31,7 +31,7 @@
 #ifdef CONFIG_CMD_I2C
 /* I2C EEPROM HT24LC04 (512B - 32 pages of 16 Bytes) */
 #if defined(CONFIG_NET2BIG_V2)
-#define CONFIG_SYS_I2C_G762_ADDR		0x3e
+#define CFG_SYS_I2C_G762_ADDR		0x3e
 #endif
 #endif /* CONFIG_CMD_I2C */