Use diff files and 'patch' instead of copying full files.

cmake_targets/tools/fix_asn1

.../tools/fix_asn1.data/RRC.rel10/SystemInformation-r8-IEs.h

...s/fix_asn1.data/RRC.rel10/SystemInformation-r8-IEs.h.diff

..._targets/tools/fix_asn1.data/S1AP.rel10.5/NativeInteger.c

...ets/tools/fix_asn1.data/S1AP.rel10.5/NativeInteger.c.diff

..._targets/tools/fix_asn1.data/S1AP.rel10.5/constr_SET_OF.c

...ets/tools/fix_asn1.data/S1AP.rel10.5/constr_SET_OF.c.diff

..._targets/tools/fix_asn1.data/X2AP.rel11.2/NativeInteger.c

...ets/tools/fix_asn1.data/X2AP.rel11.2/NativeInteger.c.diff

...1.data/X2AP.rel11.2/X2ap-CriticalityDiagnostics-IE-List.h

...a/X2AP.rel11.2/X2ap-CriticalityDiagnostics-IE-List.h.diff

..._targets/tools/fix_asn1.data/X2AP.rel11.2/constr_SET_OF.c

...ets/tools/fix_asn1.data/X2AP.rel11.2/constr_SET_OF.c.diff