test-memcpy.c: Double TIMEOUT to (8 * 60)

test-memcpy.c: Double TIMEOUT to (8 * 60)

commit d585ba47fcda99fdf228e3e45a01b11a15efbc5a
Author: Noah Goldstein <goldstein.w.n@gmail.com>
Date:   Mon Nov 1 00:49:48 2021 -0500

    string: Make tests birdirectional test-memcpy.c

    This commit updates the memcpy tests to test both dst > src and dst <
    src. This is because there is logic in the code based on the

    Signed-off-by: Noah Goldstein <goldstein.w.n@gmail.com>
    Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
significantly increased the number of tests.  On Intel Core i7-1165G7,
test-memcpy takes 120 seconds to run when machine is idle.  Double
TIMEOUT to (8 * 60) for test-memcpy to avoid timeout when machine is
under heavy load.

Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>