soc/amd/picasso: rename PICASSO_UART Kconfig option

The PICASSO_UART Kconfig option is about using the internal MMIO UART
controllers in Picasso for console, so rename it to PICASSO_CONSOLE_UART

Change-Id: I38ac9ee96af826fe49307b4d0e055a43fcbd4334
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42429
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-by: Raul Rangel <rrangel@chromium.org>

src/soc/amd/picasso/uart.c

@@ -31,14 +31,14 @@ static const struct _uart_info {
 };
 
 /*
- * Don't provide uart_platform_base and uart_platform_refclk functions if PICASSO_UART
+ * Don't provide uart_platform_base and uart_platform_refclk functions if PICASSO_CONSOLE_UART
  * isn't selected. Those two functions are used by the console UART driver and need to be
  * provided exactly once and only by the UART that is used for console.
  *
  * TODO: Replace the #if block by factoring out the two functions into a different compilation
  *       unit.
  */
-#if CONFIG(PICASSO_UART)
+#if CONFIG(PICASSO_CONSOLE_UART)
 
 uintptr_t uart_platform_base(int idx)
 {
@@ -53,7 +53,7 @@ unsigned int uart_platform_refclk(void)
 	return CONFIG(PICASSO_UART_48MZ) ? 48000000 : 115200 * 16;
 }
 
-#endif /* PICASSO_UART */
+#endif /* PICASSO_CONSOLE_UART */
 
 void clear_uart_legacy_config(void)
 {