Fix Linux kernel coding style error and warnings

Fix Linux kernel coding style error and warnings

open brace '{' following struct go on the same line
open brace '{' following function definitions go on the next line

"(foo*)" should be "(foo *)"
"foo * bar" should be "foo *bar"
sizeof foo should be sizeof(foo)

quoted string split across lines

please, no space before tabs
Statements should start on a tabstop

Signed-off-by: Dimitri Papadopoulos <3350651-DimitriPapadopoulos@users.noreply.gitlab.com>