microblaze: Move start_thread to process.c

This change is due to upcomming MMU merge

Signed-off-by: Michal Simek <monstr@monstr.eu>

arch/microblaze/kernel/process.c

@@ -182,3 +182,12 @@ unsigned long get_wchan(struct task_struct *p)
 /* TBD (used by procfs) */
 	return 0;
 }
+
+/* Set up a thread for executing a new program */
+void start_thread(struct pt_regs *regs, unsigned long pc, unsigned long usp)
+{
+	set_fs(USER_DS);
+	regs->pc = pc;
+	regs->r1 = usp;
+	regs->pt_mode = 0;
+}