Remove endianness/width calculations at runtime by installing function
pointers for bit-to-mask conversion and register accessors.
Reported-by: NThomas Gleixner <tglx@linutronix.de>
Signed-off-by: NJamie Iles <jamie@jamieiles.com>
Acked-by: NAnton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>