BUILD: update to new toolchain

Signed-off-by: poondog <markj338@gmail.com>
fs/namespace: fix: 'warning: 'kernel_dev' may be used uninitialized in this function'

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
Signed-off-by: poondog <markj338@gmail.com>
fs/namespace: fix: 'warning: 'kernel_type/dir' may be used uninitialized in this function'

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
Signed-off-by: poondog <markj338@gmail.com>
DEFCONFIG: compress RD with LZ4

Signed-off-by: poondog <markj338@gmail.com>
REVERT: DEFCONFIG: LZ4 for RD

Signed-off-by: poondog <markj338@gmail.com>