devtool: ide-sdk: support opt-out from auto IMAGE_INSTALL

Modified-mode recipes are automatically added to the image's
IMAGE_INSTALL, but recipes providing virtual/kernel or
virtual/bootloader (e.g. the kernel or u-boot) are deployed via
do_deploy into DEPLOY_DIR_IMAGE, not installed into the rootfs, so
adding them to IMAGE_INSTALL or attaching a userspace gdbserver to
them does not make sense.

Auto-detect these recipes via PROVIDES and skip both IMAGE_INSTALL
and gdbserver/lldb-server for them. IDE_SDK_AUTO_IMAGE_INSTALL allows
overriding this per recipe, in either direction.

Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>