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/sam9x60_curiosity.h b/include/configs/sam9x60_curiosity.h
index 204020d..e79f80f 100644
--- a/include/configs/sam9x60_curiosity.h
+++ b/include/configs/sam9x60_curiosity.h
@@ -14,7 +14,7 @@
 #define CFG_SYS_AT91_MAIN_CLOCK	24000000	/* 24 MHz crystal */
 
 #define CFG_USART_BASE   ATMEL_BASE_DBGU
-#define CONFIG_USART_ID     0 /* ignored in arm */
+#define CFG_USART_ID     0 /* ignored in arm */
 
 /* SDRAM */
 #define CFG_SYS_SDRAM_BASE		0x20000000