hello-mod_0.1.bb: add RPROVIDES

hello-mod_0.1.bb: add RPROVIDES

Although the package will get an automatic prefix "kernel-module", so
the package kernel-module-hello does exist, populating rootfs can
generate an error:
  - nothing provides kernel-module-hello ...

This is quite unfortunate, as this recipe is used as a sample.

Adding RPROVIDES_${PN} += "kernel-module-hello" to the recipe fixes
the problem.

[YOCTO #12641]

(From OE-Core rev: ca17a7bbea5f5454da43545d544ff7772d83ac19)

Signed-off-by: Juro Bystricky <juro.bystricky@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>