linux: add startup patch to 4.17

target/linux/patches/4.17/startup.patch

@@ -0,0 +1,34 @@
+diff -Nur linux-4.17.orig/init/initramfs.c linux-4.17/init/initramfs.c
+--- linux-4.17.orig/init/initramfs.c	2018-06-03 23:15:21.000000000 +0200
++++ linux-4.17/init/initramfs.c	2018-06-10 17:01:16.000000000 +0200
+@@ -659,6 +659,9 @@
+ 	 * us a chance to load before device_initcalls.
+ 	 */
+ 	load_default_modules();
++#ifdef CONFIG_DEVTMPFS_MOUNT
++	devtmpfs_mount("dev");
++#endif
+ 
+ 	return 0;
+ }
+diff -Nur linux-4.17.orig/init/main.c linux-4.17/init/main.c
+--- linux-4.17.orig/init/main.c	2018-06-03 23:15:21.000000000 +0200
++++ linux-4.17/init/main.c	2018-06-10 17:01:52.000000000 +0200
+@@ -1138,6 +1138,8 @@
+ 	if (ksys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0)
+ 		pr_err("Warning: unable to open an initial console.\n");
+ 
++	printk(KERN_WARNING "Starting Linux (built with OpenADK).\n");
++
+ 	(void) ksys_dup(0);
+ 	(void) ksys_dup(0);
+ 	/*
+@@ -1146,7 +1148,7 @@
+ 	 */
+ 
+ 	if (!ramdisk_execute_command)
+-		ramdisk_execute_command = "/init";
++		ramdisk_execute_command = "/sbin/init";
+ 
+ 	if (ksys_access((const char __user *)
+ 			ramdisk_execute_command, 0) != 0) {