global: Migrate CONFIG_USART_ID to CFG

Perform a simple rename of CONFIG_USART_ID to CFG_USART_ID

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/configs/vinco.h b/include/configs/vinco.h
index 3b40323..68c56df 100644
--- a/include/configs/vinco.h
+++ b/include/configs/vinco.h
@@ -18,7 +18,7 @@
 
 /* serial console */
 #define CFG_USART_BASE		0xfc00c000
-#define CONFIG_USART_ID			30
+#define CFG_USART_ID			30
 
 /* Timer */
 #define CFG_SYS_TIMER_COUNTER	0xfc06863c