libpayload/storage: Add NVMe driver

Tested with qemu virtual NVMe and Intel hardware. Works with FILO.

Change-Id: Ie75b1dc743dac3426c230c57ee23b771ba3a6e0c
Signed-off-by: Thomas Heijligen <thomas.heijligen@secunet.com>
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33582
Reviewed-by:  Felix Singer <felixsinger@posteo.net>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

payloads/libpayload/drivers/Makefile.inc

@@ -77,6 +77,7 @@ libc-y += video/graphics.c
 libc-$(CONFIG_LP_STORAGE) += storage/storage.c
 libc-$(CONFIG_LP_STORAGE_AHCI) += storage/ahci.c
 libc-$(CONFIG_LP_STORAGE_AHCI) += storage/ahci_common.c
+libc-$(CONFIG_LP_STORAGE_NVME) += storage/nvme.c
 ifeq ($(CONFIG_LP_STORAGE_ATA),y)
 libc-$(CONFIG_LP_STORAGE_ATA) += storage/ata.c
 libc-$(CONFIG_LP_STORAGE_ATA) += storage/ahci_ata.c

payloads/libpayload/drivers/storage/Kconfig

@@ -49,3 +49,10 @@ config STORAGE_AHCI_ONLY_TESTED
 	help
 	  If this option is selected, only AHCI controllers which are known
 	  to work will be used.
+
+config STORAGE_NVME
+	bool "Support for NVMe devices"
+	depends on STORAGE && PCI
+	default y
+	help
+	  Select this option if you want support for NVMe devices.