ibfortran: Readd 15 accidentally removed libgfortran symbols [PR120152]

ibfortran: Readd 15 accidentally removed libgfortran symbols [PR120152]

The r15-4124-gc0002a675a92e76d change seems to have accidentally
dropped 5 sourcefiles from i_maxloc1_c, which resulted in dropping
15 GFORTRAN_8 symbols on x86_64 and 6 on i686.

The following patch adds it back, so that we export those symbols
again, fixing the ABI problem.

2025-05-07  Jakub Jelinek  <jakub@redhat.com>

	PR libfortran/120152
	* Makefile.am (i_maxloc1_c): Readd generated/maxloc1_4_i8.c,
	generated/maxloc1_8_i8.c, generated/maxloc1_16_i8.c,
	generated/maxloc1_4_i16.c, generated/maxloc1_8_i16.c.  Move
	generated/maxloc1_16_i16.c entry earlier in the list.
	* Makefile.in: Regenerated.