media: av7110: coding style fixes: variable types

This patch fixes the following checkpatch warnings:

CHECK:PREFER_KERNEL_TYPES: Prefer kernel type 's32' over 'int32_t'
CHECK:PREFER_KERNEL_TYPES: Prefer kernel type 'u64' over 'uint64_t'
WARNING:UNNECESSARY_INT: Prefer 'long' over 'long int' as the int is unnecessary
WARNING:UNSPECIFIED_INT: Prefer 'unsigned int' to bare use of 'unsigned'

Signed-off-by: Stefan Herdler <herdler@nurfuerspam.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>