RISC-V: Reject 'd' extension with ILP32E ABI

RISC-V: Reject 'd' extension with ILP32E ABI

Also add a testcase for -mabi=lp64d where 'd' is required.

gcc/ChangeLog:

	PR target/116111
	* config/riscv/riscv.cc (riscv_option_override): Add error.

gcc/testsuite/ChangeLog:

	* gcc.target/riscv/arch-41.c: New test.
	* gcc.target/riscv/pr116111.c: New test.

Signed-off-by: Patrick O'Neill <patrick@rivosinc.com>