[LLVM][SYCL][E2E] Disable xfail for passing test

[ggojska]

Disabled xfail in following tests:

SYCL :: Matrix/SG32/get_coord_int8_matB.cpp
SYCL :: Matrix/get_coord_int8_matB.cpp
SYCL :: Matrix/joint_matrix_annotated_ptr.cpp

[dkhaldi]

@ggojska, you should create a fork from the repo first.