Make IMAGE_FSTYPES overridable.

Users might wish to build different images types by setting the
IMAGE_FSTYPES parameter in their local.conf.

Signed-off-by: Ash Charles <ashcharles@gmail.com>
Specify a PREFERRED_PROVIDER for u-boot
Unset PREFERRED_PROVIDER_jpeg* in sample conf file

The local.conf.sample provided by meta-gumstix doesn't need to set a
preferred provider for jpeg as no other jpeg providers are pulled in
by the default set of layers.  Libjpeg-turbo is pulled in by meta-oe.

Signed-off-by: Ash Charles <ashcharles@gmail.com>
Remove DISTRO policy from a BSP layer.

The meta-gumstix layer is a BSP-only layer.  We don't need to suggest
distro-level policy at this point.  This is more appropriate for
meta-gumstix-extras.

Signed-off-by: Ash Charles <ashcharles@gmail.com>
Remove unused site.conf.sample

TEMPLATECONF doesn't pull in site.conf.sample so it is not actually used.

Signed-off-by: Ash Charles <ashcharles@gmail.com>
[omap3-pwm] Update license and code for OMAP3 PWM

Follow the changes from upstream:
https://github.com/Pansenti/meta-pansenti/blob/master/recipes-kernel/drivers/omap3-pwm_git.bb

Signed-off-by: Ash Charles <ashcharles@gmail.com>