Don't use BFD_VMA_FMT in gdb and sim

[Tom Tromey]

>>>>> "Alan" == Alan Modra via Gdb-patches <gdb-patches@sourceware.org> writes:

Alan> On Thu, Aug 04, 2022 at 11:59:25AM -0600, Tom Tromey wrote:
>> >>>>> "Alan" == Alan Modra via Gdb-patches <gdb-patches@sourceware.org> writes:
>> 
Alan> Like commit b82817674f, this replaces BFD_VMA_FMT "x" with PRIx64,
Alan> and casts to promote bfd_vma to uint64_t.
>> 
Alan> Tested with both 64-bit and 32-bit gdb builds, and 64-bit make check.
Alan> OK to install?

Looks good to me, thank you for doing this.

Tom