Fix ability to read multiple driver handles from multiple libraries
Fix ability to read multiple driver handles from multiple libraries

- Fixed driverGet to read the "count" handles from multiple vendor
dynamic libraries instead of expecting to get all the driver handles
from a single vendors' library.

Signed-off-by: Spruit, Neil R <6faba9e192e760cd5c0903453665e665558c0fe4@intel.com>

oneapi-src/level-zero,oneapi-src/level-zero,oneapi-src/level-zero