This change does multiple things, all related to enable sparse usage as
a static analysis tool selectable from the OpenWrt configuration:
*add a KERNEL_SPARSE option in the config to add sparse to the kernel
 build (through the C=1 option usage)
*add sparse as a new host tools. It will get selected automatically when
 the above option will be enabled

Signed-off-by: Mathieu Olivari <mathieu@qca.qualcomm.com>

SVN-Revision: 40490

Signed-off-by: Imre Kaloz <kaloz@openwrt.org>

SVN-Revision: 40361

Recent lxc versions are not useful if this option is not enabled. That said,
enable KERNEL_POSIX_MQUEUE by default when KERNEL_LXC_MISC is selected.

Signed-off-by: Luka Perkov <luka@openwrt.org>

SVN-Revision: 39385

Signed-off-by: Imre Kaloz <kaloz@openwrt.org>

SVN-Revision: 39208

Signed-off-by: Imre Kaloz <kaloz@openwrt.org>

SVN-Revision: 39207

Signed-off-by: Imre Kaloz <kaloz@openwrt.org>

SVN-Revision: 39206

Useful when debugging kernel which uses this infrastructure, for
example ubi/ubifs.

Signed-off-by: Luka Perkov <luka@openwrt.org>

SVN-Revision: 39007

Signed-off-by: Imre Kaloz <kaloz@openwrt.org>

SVN-Revision: 38895