pciutils: version bump 3.1.2 -> 3.2.1

This patch bumps the version of pciutils from 3.1.2 to 3.2.1.

Also cleanup the rule files:

- remove of the prepare rule.
- use of call ptx/ifdef instead ifdefs.
- Adding support for installing libpci.
- Adding support for libkmod feature.
- Add install of /usr/bin/update-pciids.
- fit the help messages in Kconfig in 80 char width.
- fix $(PTXCONF_ARCH_STRING)--linux to $(PTXCONF_ARCH_STRING)-linux
- Add new entry for installing PCIUTILS_TOOLS.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
powertop: version bump 1.11 -> 2.5

This patch adds the new powertop package with pci support. With the old
one I got a 404 while receiving sources. The newer implementation uses
autotools than plain Makefiles. The libpci patch adds a option for
--enable-pci and --disable-pci for the configure argument, which enable
or disable pci support explicit.

Also add a missing LICENSE env in the rule and dependency on !BUSYBOX_POWERTOP
which was reported by Sophie CARAYOL <s.carayol@lacroix-electronics.com>.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
opencv: add new package

Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com>
[mol: some cosmetic changes]
Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>