src/lib: Use tabs instead of spaces

Fix the following errors and warnings detected by checkpatch.pl:

ERROR: code indent should use tabs where possible
ERROR: switch and case should be at the same indent
WARNING: Statements should start on a tabstop
WARNING: please, no spaces at the start of a line
WARNING: please, no space before tabs
WARNING: suspect code indent for conditional statements
WARNING: labels should not be indented

TEST=Build and run on Galileo Gen2

Change-Id: Iebcff26ad41ab6eb0027b871a1c06f3b52dd207c
Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com>
Reviewed-on: https://review.coreboot.org/18732
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

src/lib/thread.c

@@ -186,8 +186,8 @@ static void asmlinkage call_wrapper_block_state(void *arg)
 /* Prepare a thread so that it starts by executing thread_entry(thread_arg).
  * Within thread_entry() it will call func(arg). */
 static void prepare_thread(struct thread *t, void *func, void *arg,
-                           asmlinkage void(*thread_entry)(void *),
-                           void *thread_arg)
+			   asmlinkage void(*thread_entry)(void *),
+			   void *thread_arg)
 {
 	/* Stash the function and argument to run. */
 	t->entry = func;
@@ -305,7 +305,7 @@ int thread_run(void (*func)(void *), void *arg)
 }
 
 int thread_run_until(void (*func)(void *), void *arg,
-                     boot_state_t state, boot_state_sequence_t seq)
+		     boot_state_t state, boot_state_sequence_t seq)
 {
 	struct thread *current;
 	struct thread *t;