grlib: Move header files

Update #3678.

bsps/sparc/leon3/console/console.c

@@ -28,7 +28,7 @@
 
 #include <bsp.h>
 #include <bsp/fatal.h>
-#include <bsp/apbuart_termios.h>
+#include <grlib/apbuart_termios.h>
 #include <rtems/console.h>
 #include <string.h>
 

bsps/sparc/leon3/console/printk_support.c

@@ -22,7 +22,7 @@
 #include <stdlib.h>
 #include <assert.h>
 #include <stdio.h>
-#include <bsp/apbuart.h>
+#include <grlib/apbuart.h>
 
 int leon3_debug_uart_index __attribute__((weak)) = 0;
 struct apbuart_regs *leon3_debug_uart = NULL;