commonlib: Move drivers/storage into commonlib/storage

Move drivers/storage into commonlib/storage to enable access by
libpayload and indirectly by payloads.

* Remove SD/MMC specific include files from include/device
* Remove files from drivers/storage
* Add SD/MMC specific include files to commonlib/include
* Add files to commonlib/storage
* Fix header file references
* Add subdir entry in commonlib/Makefile.inc to build the SD/MMC driver
* Add Kconfig source for commonlib/storage
* Rename *DEVICE* to *COMMONLIB*
* Rename *DRIVERS_STORAGE* to *COMMONLIB_STORAGE*

TEST=Build and run on Galileo Gen2

Change-Id: I4339e4378491db9a0da1f2dc34e1906a5ba31ad6
Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com>
Reviewed-on: https://review.coreboot.org/19672
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
diff --git a/src/soc/intel/quark/sd.c b/src/soc/intel/quark/sd.c
index 7b96001..e41afa4 100644
--- a/src/soc/intel/quark/sd.c
+++ b/src/soc/intel/quark/sd.c
@@ -14,12 +14,12 @@
  */
 
 #include <arch/io.h>
+#include <commonlib/sdhci.h>
+#include <commonlib/storage.h>
 #include <console/console.h>
 #include <device/device.h>
 #include <device/pci.h>
 #include <device/pci_ids.h>
-#include <device/sdhci.h>
-#include <device/storage.h>
 #include <soc/storage_test.h>
 
 static void init(struct device *dev)