[PATCH] Add generic LE/BE load/store uint type convertors and use them in msgb

Attached is simple patch which adds little-endian & big-endian macro to move bytes to and from multibyte integer types like uint16_t, uint32_t etc. Some of this code is used right away in msgb.h but it will also be used in kasumi implementation later on. -- best regards, Max, http://fairwaves.ru