smem: Remove <common.h> and add needed includes

Remove <common.h> from this driver directory and when needed
add missing include files directly.

Signed-off-by: Tom Rini <trini@konsulko.com>

drivers/smem/msm_smem.c

@@ -5,7 +5,6 @@
  * Copyright (c) 2018, Ramon Fried <ramon.fried@gmail.com>
  */
 
-#include <common.h>
 #include <errno.h>
 #include <dm.h>
 #include <asm/global_data.h>

drivers/smem/sandbox_smem.c

@@ -3,7 +3,6 @@
  * Copyright (c) 2018 Ramon Fried <ramon.fried@gmail.com>
  */
 
-#include <common.h>
 #include <dm.h>
 #include <errno.h>
 #include <smem.h>

drivers/smem/smem-uclass.c

@@ -5,7 +5,6 @@
 
 #define LOG_CATEGORY UCLASS_SMEM
 
-#include <common.h>
 #include <dm.h>
 #include <smem.h>