use correct pointer type for CUdeviceptr on aarch64 in nvdec filter

[rathann]

This fixes the following warnings:

...
filters/dec_nvdec.c: In function ‘nvdec_flush_frame’:
filters/dec_nvdec.c:1031:98: warning: passing argument 3 of ‘cuvidMapVideoFrame’ from incompatible pointer type [-Wincompatible-pointer-types]
 1031 |                 res = cuvidMapVideoFrame(ctx->dec_inst->cu_decoder, f->frame_info.picture_index, &map_mem, &pitch, &params);
      |                                                                                                  ^~~~~~~~
      |                                                                                                  |
      |                                                                                                  CUdeviceptr * {aka long long unsigned int *}
filters/dec_nvdec.c:1031:98: note: expected ‘unsigned int *’ but argument is of type ‘CUdeviceptr *’ {aka ‘long long unsigned int *’}
filters/dec_nvdec.c: In function ‘nvframe_get_gl_texture’:
filters/dec_nvdec.c:1209:90: warning: passing argument 3 of ‘cuvidMapVideoFrame’ from incompatible pointer type [-Wincompatible-pointer-types]
 1209 |         res = cuvidMapVideoFrame(ctx->dec_inst->cu_decoder, f->frame_info.picture_index, &vid_data, &vid_pitch, &params);
      |                                                                                          ^~~~~~~~~
      |                                                                                          |
      |                                                                                          CUdeviceptr * {aka long long unsigned int *}
filters/dec_nvdec.c:1209:90: note: expected ‘unsigned int *’ but argument is of type ‘CUdeviceptr *’ {aka ‘long long unsigned int *’}
filters/dec_nvdec.c: In function ‘nvframe_get_frame’:
filters/dec_nvdec.c:1319:98: warning: passing argument 3 of ‘cuvidMapVideoFrame’ from incompatible pointer type [-Wincompatible-pointer-types]
 1319 |                 res = cuvidMapVideoFrame(ctx->dec_inst->cu_decoder, f->frame_info.picture_index, &map_mem, &pitch, &params);
      |                                                                                                  ^~~~~~~~
      |                                                                                                  |
      |                                                                                                  CUdeviceptr * {aka long long unsigned int *}
filters/dec_nvdec.c:1319:98: note: expected ‘unsigned int *’ but argument is of type ‘CUdeviceptr *’ {aka ‘long long unsigned int *’}

These became errors in GCC 14. Note: CUdeviceptr was already defined to long long unsingned int * on aarch64:
https://github.com/gpac/gpac/blob/master/src/filters/dec_nvdec_sdk.h#L59 but the condition enabling the use of 64-bit pointers was missing in other places.

[jeanlf]

thanks !