drm/amd: Clean up errors in vega10_processpptables.c

Fix the following errors reported by checkpatch:

ERROR: "foo* bar" should be "foo *bar"
ERROR: space required before the open brace '{'
ERROR: space required before the open parenthesis '('

Signed-off-by: Ran Sun <sunran001@208suo.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>