[RISCV] Replace 'sve' with 'rvv' in some test file names. NFC

diff --git a/clang/test/Sema/riscv-sve-vector-exp-ops.c b/clang/test/Sema/riscv-rvv-vector-exp-ops.c
similarity index 100%
rename from clang/test/Sema/riscv-sve-vector-exp-ops.c
rename to clang/test/Sema/riscv-rvv-vector-exp-ops.c

diff --git a/clang/test/Sema/riscv-sve-vector-log-ops.c b/clang/test/Sema/riscv-rvv-vector-log-ops.c
similarity index 100%
rename from clang/test/Sema/riscv-sve-vector-log-ops.c
rename to clang/test/Sema/riscv-rvv-vector-log-ops.c

diff --git a/clang/test/Sema/riscv-sve-vector-trig-ops.c b/clang/test/Sema/riscv-rvv-vector-trig-ops.c
similarity index 100%
rename from clang/test/Sema/riscv-sve-vector-trig-ops.c
rename to clang/test/Sema/riscv-rvv-vector-trig-ops.c