LoongArch: testsuite:Fix FAIL in file bind_c_array_params_2.f90.

On the LoongArch architecture, an error was found in the
bind_c_array_params_2.f90 file because there was no proper assembly code
for the regular expression detection function call, such as bl %plt(myBindC).

gcc/testsuite/ChangeLog:

	* gfortran.dg/bind_c_array_params_2.f90: Add code test rules to
	support testing of the loongArch architecture.