rasdaemon: fix issue of signed and unsigned integer comparison and remove redundant...

rasdaemon: fix issue of signed and unsigned integer comparison and remove redundant header file

1. The return value of ARRAY_SIZE() is unsigned integer. It isn't right to
compare it with a signed integer. This patch fix them.

2. Remove redundant header file and adjust the header files sequence.

Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
Signed-off-by: Shiju Jose <shiju.jose@huawei.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>