drm/amd/display: Remove reduntant comparisons by Coverity

[WHY]
Coverity analysis of the Upstream display driver code
(amd-staging-drm-next) flagged these three functions as
containing 'CONSTANT_EXPRESSION_RESULT' errors, i. e. the
conditionals are reduntant since their result is predetermined.

fixpt31_32.c:
The two flagged 'ASSERT' lines redundant since they are always true:
- LONG_MAX equals to the largest 'signed long long' number
- res.value is type 'signed long long',

So, the condition inside the 'ASSERTS's is always

link_dp_training.c:
The flagged conditional statement is always false:
- 'max_requested.FFE_PRESET.settings.level' is 4 bits, so its max
  possible value is 15
- 'DP_FFE_PRESET_MAX_LEVEL' equals to 15.

So, the conditional statement is always false and the wrapped code
never executes.

[HOW]
Removed lines flagged by Coverity analysis.

Reviewed-by: Sun peng Li <[email protected]>
Acked-by: Zaeem Mohamed <[email protected]>
Signed-off-by: Ivan Lipski <[email protected]>
Tested-by: Daniel Wheeler <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

0 files changed, 0 insertions, 0 deletions