The IRQ handler signature does not match the expected signature, so let's
fix that. The data argument is unused anyway.
--- a/libgloss/or1k/or1k_uart.c	2024-05-09 13:34:05.290587255 +0200
+++ b/libgloss/or1k/or1k_uart.c	2024-05-09 13:33:36.794072659 +0200
@@ -90,7 +90,7 @@ void (*_or1k_uart_read_cb)(char c);
  * This is the interrupt handler that is registered for the callback
  * function.
  */
-void _or1k_uart_interrupt_handler(uint32_t data)
+void _or1k_uart_interrupt_handler(void *data)
 {
 	uint8_t iir = REG8(IIR);
 
--- a/libgloss/or1k/or1k_uart.h	2024-05-09 13:34:40.180397343 +0200
+++ b/libgloss/or1k/or1k_uart.h	2024-05-09 13:33:36.794072659 +0200
@@ -30,7 +30,7 @@ extern void (*_or1k_uart_read_cb)(char c
 /**
  * The UART interrupt handler
  */
-void _or1k_uart_interrupt_handler(uint32_t data);
+void _or1k_uart_interrupt_handler(void *data);
 
 /**
  * Initialize UART