lib: bitmap: order includes alphabetically

For better readability and maintenance: order the includes in bitmap
source files alphabetically.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
diff --git a/lib/bitmap.c b/lib/bitmap.c
index 75006c4..78f70d9 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -3,17 +3,18 @@
  * lib/bitmap.c
  * Helper functions for bitmap.h.
  */
-#include <linux/export.h>
-#include <linux/thread_info.h>
-#include <linux/ctype.h>
-#include <linux/errno.h>
+
 #include <linux/bitmap.h>
 #include <linux/bitops.h>
 #include <linux/bug.h>
+#include <linux/ctype.h>
+#include <linux/errno.h>
+#include <linux/export.h>
 #include <linux/kernel.h>
 #include <linux/mm.h>
 #include <linux/slab.h>
 #include <linux/string.h>
+#include <linux/thread_info.h>
 #include <linux/uaccess.h>
 
 #include <asm/page.h>