RISC-V: Add newline to the end of file [NFC]

RISC-V: Add newline to the end of file [NFC]

gcc/ChangeLog:

	* config/riscv/riscv-c.cc: Add newline to the end of file.

gcc/testsuite/ChangeLog:

	* gcc.target/riscv/rvv/base/pragma-1.c: Add newline to the end of file.
	* gcc.target/riscv/rvv/base/pragma-2.c: Ditto.
	* gcc.target/riscv/rvv/base/pragma-3.c: Ditto.
	* gcc.target/riscv/rvv/base/user-1.c: Ditto.
	* gcc.target/riscv/rvv/base/user-2.c: Ditto.
	* gcc.target/riscv/rvv/base/user-3.c: Ditto.
	* gcc.target/riscv/rvv/base/user-4.c: Ditto.
	* gcc.target/riscv/rvv/base/user-5.c: Ditto.
	* gcc.target/riscv/rvv/base/user-6.c: Ditto.
	* gcc.target/riscv/rvv/base/vread_csr.c: Ditto.
	* gcc.target/riscv/rvv/base/vwrite_csr.c: Ditto.