soc/amd/piasso/uart: move get_uart_base prototype to common code header

This will result in less code duplication when the common AMD SoC UART
support gets used for more AMD SoCs.

Change-Id: Id1786f32324de3e3947d792c599e2019705c5a85
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49373
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/amd/common/block/include/amdblocks/uart.h

@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef AMD_BLOCK_UART_H
+#define AMD_BLOCK_UART_H
+
+#include <types.h>
+
+uintptr_t get_uart_base(unsigned int idx); /* get MMIO base address of FCH UART */
+
+#endif /* AMD_BLOCK_UART_H */

src/soc/amd/common/block/uart/uart_console.c

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
+#include <amdblocks/uart.h>
 #include <console/uart.h>
-#include <soc/uart.h>
 
 /*
  * uart_platform_base and uart_platform_refclk are used by the console UART driver and need to

src/soc/amd/picasso/include/soc/uart.h

@@ -8,6 +8,4 @@
 void set_uart_config(unsigned int idx); /* configure hardware of FCH UART selected by idx */
 void clear_uart_legacy_config(void); /* disable legacy I/O decode for FCH UART */
 
-uintptr_t get_uart_base(unsigned int idx); /* get MMIO base address of FCH UART */
-
 #endif /* AMD_PICASSO_UART_H */

src/soc/amd/picasso/uart.c

@@ -6,6 +6,7 @@
 #include <device/mmio.h>
 #include <amdblocks/gpio_banks.h>
 #include <amdblocks/aoac.h>
+#include <amdblocks/uart.h>
 #include <soc/southbridge.h>
 #include <soc/gpio.h>
 #include <soc/uart.h>