refactor(rpi): split out console registration logic

Detection of the UART in use and GPIO code only apply to RPi 3 and 4.

RPi 5 has a dedicated PL011 debug port.

Change-Id: Iddf8aea01278e2b79b4e7c476740f1add8c419f0
Signed-off-by: Mario Bălănică <mariobalanica02@gmail.com>
diff --git a/plat/rpi/common/rpi3_console_pl011.c b/plat/rpi/common/rpi3_console_pl011.c
new file mode 100644
index 0000000..6ab7209
--- /dev/null
+++ b/plat/rpi/common/rpi3_console_pl011.c
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2015-2024, Arm Limited and Contributors. All rights reserved.
+ * Copyright (c) 2024, Mario Bălănică <mariobalanica02@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <drivers/arm/pl011.h>
+#include <drivers/console.h>
+#include <platform_def.h>
+
+#include <rpi_shared.h>
+
+int rpi3_register_used_uart(console_t *console)
+{
+	return console_pl011_register(PLAT_RPI_PL011_UART_BASE,
+				      PLAT_RPI_PL011_UART_CLOCK,
+				      PLAT_RPI_UART_BAUDRATE,
+				      console);
+}