LoongArch: Fix the issue of function jump out of range caused by crtbeginS.o [PR118844].

LoongArch: Fix the issue of function jump out of range caused by crtbeginS.o [PR118844].

Due to the presence of R_LARCH_B26 in
/usr/lib/gcc/loongarch64-linux-gnu/14/crtbeginS.o, its addressing
range is [PC-128MiB, PC+128MiB-4]. This means that when the code
segment size exceeds 128MB, linking with lld will definitely fail
(ld will not fail because the order of the two is different).

The linking order:
  lld: crtbeginS.o + .text + .plt
  ld : .plt + crtbeginS.o + .text

To solve this issue, add '-mcmodel=extreme' when compiling crtbeginS.o.

	PR target/118844

libgcc/ChangeLog:

	* config/loongarch/t-crtstuff: Add '-mcmodel=extreme'
	to CRTSTUFF_T_CFLAGS_S.