V4L/DVB (4787): Budget-ci: Inversion setting fixed for Technotrend 1500 T

Technotrend 1500 T card have "inverted inversion". This patch fixes that.
Many thanks to Martin Zwickel from Technotrend for his confirmation and
correction proposal.

Signed-off-by: Raymond Mantchala <raymond.mantchala@streamvision.fr>
Signed-off-by: Perceval Anichini <perceval.anichini@streamvision.fr>
Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>