msm8974: Enable UART

Add clock and gpio support needed for UART on 8974.

Change-Id: I277941c8fa4c1dad8cf241e638dde71d156c6fb4
diff --git a/target/copper/init.c b/target/copper/init.c
index b5922c3..56acf93 100644
--- a/target/copper/init.c
+++ b/target/copper/init.c
@@ -54,7 +54,7 @@
 void target_early_init(void)
 {
 #if WITH_DEBUG_UART
-	uart_dm_init(0, 0, BLSP1_UART0_BASE);
+	uart_dm_init(1, 0, BLSP1_UART1_BASE);
 #endif
 }