petalinux-image-full.inc: Add items to SDK_RDEPENDS needed for sdk
petalinux-image-full.inc: Add items to SDK_RDEPENDS needed for sdk

TOOLCHAIN_HOST_TASKS when building the extensible esdk is being
overwritten to just include meta-environment-extsdk-${MACHINE}, but for
our use case of building esdks (to build and upload a comprehensive
sstate cache) we need to enable the packages that are needed for
building the sdk as well.

Adding nativesdk-packagegroup-sdk-host and
packagegroup-cross-canadian-${MACHINE} as well to SDK_RDEPENDS
(TOOLCHAIN_HOST_TASKS rolls up into SDK_RDEPENDS) for the
populate_sdk_ext task to create a comprehensive dependency list

Signed-off-by: Jaewon Lee <1b369288d13b7b5cc9a37dd614e864b90fd18321@xilinx.com>

Xilinx/meta-petalinux,Xilinx/meta-petalinux,Xilinx/meta-petalinux,Xilinx/meta-petalinux,Xilinx/meta-petalinux,Xilinx/meta-petalinux