copper: Enable UART and USB drivers.

Change-Id: I07425290fc603440e5016c878d9b75862ab543df
diff --git a/platform/msm_shared/include/uart_dm.h b/platform/msm_shared/include/uart_dm.h
index f7746de..3421666 100644
--- a/platform/msm_shared/include/uart_dm.h
+++ b/platform/msm_shared/include/uart_dm.h
@@ -81,7 +81,7 @@
 
 /* UART DM TX FIFO Registers - 4 */
 #if PERIPH_BLK_BLSP
-#define MSM_BOOT_UART_DM_TF(base, x)         ((base + 0x100+(4*(x)))
+#define MSM_BOOT_UART_DM_TF(base, x)         ((base) + 0x100+(4*(x)))
 #else
 #define MSM_BOOT_UART_DM_TF(base, x)         ((base) + 0x70+(4*(x)))
 #endif