Add Runtime Check for Supported VA Profiles

[uartie]

@xuguangxin has requested the following be added to libyami: "It's better have runtime check in VA's profile. If VA do not supports VAProfileVP9Version0, we need return NULL for decoder creation.Fail in create time can help customer do better decision. such as fail back to software decoder."

[uartie]

Unfortunately, I don't recall what the use-case/context was for this and whether this is still relevant. Feel free to close if you see no issue here.

[xuguangxin]

this is for gest in different platform such as SKL, BXT. It still exist.

[xuguangxin]

thanks for report