[oe] [PATCH] kernel.bbclass: avoid NOTE messages for files that are staged but not packaged

[Frans Meulenbroeks]

I discovered an issue with this patch.
kerneldir was moved (and modified) from kernel_do_install to
sysroot_stage_all_append.
as the assignment to kerneldir was not used in kernel_do_install it
went unnoticed that some kernel recipes have a do_install_append which
references kerneldir.
I authored a small patch for this, setting kerneldir at the end of
kernel_do_install (with the original value).

I've already pushed it
http://cgit.openembedded.org/cgit.cgi/openembedded/commit/?id=98037f10625acdc68d35d94dfbce6cafff9fbe99
without the patch at least one of my testing targets would have failed.

Frans