The quotes should be generated in the output to match the expected cmake
syntax for setting cache variables.
(From OE-Core rev: a19a6201c8cc255583bd014534b4a6ec2524070f)
Signed-off-by: Nathan Rossi <nathan@nathanrossi.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>