Add cap workarounds for possible arm bugs

This disables doing copies as draws and disables instance attrib support.

Bug: skia:
Change-Id: I52c03d773974a697901ba1fc9dfa824262285568
Reviewed-on: https://skia-review.googlesource.com/110320
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
3 files changed