hvmloader: Remove all 64-bit print arguments

hvmloader: Remove all 64-bit print arguments

The printf() available to hvmloader does not handle 64-bit data types;
manually break them down as two 32-bit strings.

v4:
 - Make macros for the requisite format and bit shifting

Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Acked-by: Keir Fraser <keir@xen.org>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
CC: Ian Campbell <ian.campbell@citrix.com>
CC: Ian Jackson <ian.jackson@citrix.com>
CC: Stefano Stabellini <stefano.stabellini@citrix.com>
CC: Hanweidong <hanweidong@huawei.com>
CC: Keir Fraser <keir@xen.org>