Update the tic6x linker tests to match the current behaviour of the linker and readelf.

Update the tic6x linker tests to match the current behaviour of the linker and readelf.

	PR binutils/16317
	* ld-tic6x/shlib-1.rd: Expect I attribute with RELA sections.
	* ld-tic6x/shlib-1b.rd: Likewise.
	* ld-tic6x/shlib-1r.rd: Likewise.
	* ld-tic6x/shlib-1rb.rd: Likewise.
	* ld-tic6x/shlib-app-1rd: Likewise.
	* ld-tic6x/shlib-app-1b.rd: Likewise.
	* ld-tic6x/shlib-app-1r.rd: Likewise.
	* ld-tic6x/shlib-app-1rb.rd: Likewise.
	* ld-tic6x/shlib-noindex.rd: Likewise.
	* ld-tic6x/static-app-1.rd: Likewise.
	* ld-tic6x/static-app-1b.rd: Likewise.
	* ld-tic6x/static-app-1r.rd: Likewise.
	* ld-tic6x/static-app-1rb.rd: Likewise.

	PR binutils/16318
	* ld-tic6x/tic6x.exp: Expect C6000 osabi value in relocatable
	objects.