sys-power/suspend: fix bug 556954

sys-power/suspend: fix bug 556954

Fix build with fbsplash support in case when mediag-gfx/splashutils are
compiled with media-libs/freetype support which is compiled with
app-arch/bzip2 support.

This issue is a combination of multiple bugs:

1. media-gfx/splashutils provides incomplete list of libraries for
static linking. See bug 408283.

2. media-gfx/splashutils contains bogus entry in the list of
static libraries. See bug 557126.

3. suspend asks splashutils for a list of dynamic libs instead
of static. This is fixed in this commit.

Signed-off-by: Andrew Savchenko <bircoph@gmail.com>