Increase tolerance for matrix precision tests

Increase tolerance for matrix precision tests

On hardware with a RTZ rounding mode the tolerance required in these
tests was too low and valid implementations of the functions would
fail the tests.

Increase the tolerance allowed to allow RTZ hardware to pass these
tests.

Affects:
dEQP-VK.glsl.builtin.precision*.determinant.*
dEQP-VK.glsl.builtin.precision*.inverse.*

Components: Vulkan

VK-GL-CTS issue: 3182

Change-Id: I83845aec8faa01aec0820852219b6b8c4326da4e
(cherry picked from commit 0593bd63803c16159db7553d8ca5191fd42126cc)