rootfs.py: introduce USE_DEVFS check

Since commit a83144bac8d67704ff66f5dc0fc56f5b63979694 (2014-02-11), USE_DEVFS is not considered anymore.
For compatibility, let's restore USE_DEVFS semantic.
Also add USE_DEVFS to documentation.conf.

(From OE-Core rev: d12a5e38a02abe3feb3db8ae5ffd9a5005124294)

Signed-off-by: Matthieu Crapet <Matthieu.Crapet@ingenico.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/meta/conf/documentation.conf b/meta/conf/documentation.conf
index 4d49a02ece..9d6e78f9e6 100644
--- a/meta/conf/documentation.conf
+++ b/meta/conf/documentation.conf
@@ -436,6 +436,7 @@ UBOOT_MACHINE[doc] = "Specifies the value passed on the make command line when b
 UBOOT_MAKE_TARGET[doc] = "Specifies the target called in the Makefile."
 UBOOT_SUFFIX[doc] = "Points to the generated U-Boot extension."
 UBOOT_TARGET[doc] = "Specifies the target used for building U-Boot."
+USE_DEVFS[doc] = "When building images, specifies to populate or not /dev. This variable defaults to '1' (leave directory empty, surely because devtmpfs do the job). Set it to '0' to use makedevs (or consider using a custom file with IMAGE_DEVICE_TABLES)."
 USER_CLASSES[doc] = "List of additional classes to use when building images that enable extra features."
 USERADD_PACKAGES[doc] = "When a recipe inherits the useradd class, this variable specifies the individual packages within the recipe that require users and/or groups to be added."
 USERADD_PARAM[doc] = "When a recipe inherits the useradd class, this variable specifies for a package what parameters should be passed to the useradd command if you wish to add a user to the system when the package is installed."