Yocto Linux meta recipe for wolfTPM examples

[aidangarske]

Description

Added recipes-examples/wolftpm/wolftpm-examples.bb and recipes-examples/wolftpm/wolftpm_%.bbappend to add support for wolfTPM examples directory.
IMAGE_INSTALL argument for wolftpm examples -> wolftpm-examples
Works on Scarthgap tested - core-image-minimal and core-image-full-cmdline
I also added a README in this directory with relevant info.
Runs in runqemu qemux86-64 in usr/bin/examples examples can be ran like this:

$ cd examples/wrap
$ ./wrap_test

[night1rider]

Few things that need to happen before we can merge this.

[night1rider]

Seems to be a path issue, it is use the original host system's path and not the target systems.

[night1rider]

This step produces this:

Poky (Yocto Project Reference Distro) 4.0.19 qemux86-64 /dev/ttyS0

qemux86-64 login: root
root@qemux86-64:~# cd /usr/bin/  
Display all 100 possibilities? (y or n)
root@qemux86-64:~# cd /usr/bin/examples/
root@qemux86-64:/usr/bin/examples# cd ./bench/
root@qemux86-64:/usr/bin/examples/bench# ./bench 
./bench: line 202: cd: /home/dell5060/wolfWork/yocto/kirkstone-poky/build/tmp/work/core2-64-poky-linux/wolftpm/3.2.0-r0/build: No such file or directory
./bench: line 202: x86_64-poky-linux-gcc: command not found
root@qemux86-64:/usr/bin/examples/bench# 

Seems like it is use the host system file path still instead of the correct path for the target system.

[night1rider]

I'll add this was with yocto kirkstone