Fix compilation warnings(errors) under cross compiler aarch64-none-linux-gnu-

[yexuanyang]

Related issue is #55

[agicy]

I've gone ahead and applied the type casting fixes via "Suggested changes" to save you some time. I really appreciate your improvements here—it's great to see those warnings disappear!

However, there is one spot around lines 91-95 where I couldn't apply the suggestion directly (it seems like a GitHub glitch). Could you please update that part manually?

Here is the recommended code:

        if ((uintptr_t)zonex_ipa >= zone_mem[zone_id][i][ZONEX_IPA] &&
            (uintptr_t)zonex_ipa < zone_mem[zone_id][i][ZONEX_IPA] +
                                       zone_mem[zone_id][i][MEM_SIZE]) {
            return i;
        }

In the meantime, could you also please take a look at my other comments regarding the build/Makefile and header files?

Thanks again for your hard work!

[yexuanyang]

OK, thanks for your review, I will take a look and update the mentioned part manually.