mei: remove include to pci header from mei module files

Remove inclusion of linux/pci.h in mei layer
however we need to include the headers that before
got included implicitly from linux/pci.h.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c
index 209650b..c874fdd 100644
--- a/drivers/misc/mei/hbm.c
+++ b/drivers/misc/mei/hbm.c
@@ -15,11 +15,12 @@
  */
 
 #include <linux/export.h>
-#include <linux/pci.h>
 #include <linux/sched.h>
 #include <linux/wait.h>
-#include <linux/mei.h>
 #include <linux/pm_runtime.h>
+#include <linux/slab.h>
+
+#include <linux/mei.h>
 
 #include "mei_dev.h"
 #include "hbm.h"