xconfig: fix missing suboption and help panels on first run
qconfig initial slider sizes fix.
On first `make xconfig`, suboption and help panels were hidden.
Now we properly detect the first run, and show those panels.
Reported-by: Jason Vas Dias <jason.vas.dias@gmail.com> Signed-off-by: Boris Barbulovski <bbarbulovski@gmail.com> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Michal Marek <mmarek@suse.com>