Revert "Revert "Add NVME block device support and userspace utilities""

This reverts commit 6dc084f36646d333e636b1ad362912fc686925b4.

With linux 4.4.20 the shutdown issues with NVMe appear to be resolved -
re-enable support by reverting the original revert.

Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
diff --git a/openpower/package/petitboot/Config.in b/openpower/package/petitboot/Config.in
index 327f852..e5769de 100644
--- a/openpower/package/petitboot/Config.in
+++ b/openpower/package/petitboot/Config.in
@@ -13,6 +13,8 @@
 	select BR2_PACKAGE_POWERPC_UTILS if BR2_powerpc || BR2_powerpc64 || BR2_powerpc64le
 	# run-time dependency only
 	select BR2_PACKAGE_IPRUTILS if BR2_powerpc || BR2_powerpc64 || BR2_powerpc64le
+	# run-time dependency only
+	select BR2_PACKAGE_NVME if BR2_powerpc || BR2_powerpc64 || BR2_powerpc64le
 	help
 	  Petitboot is a small kexec-based bootloader