[PATCH] RISC-V: Fix library search path for rv32

[Kito Cheng]

Hi all:

Current rv32 library search path are set to lib/<abi>, however
according the library path settings in gcc [1], it should be
lib32/<abi>.

We've verified that with glibc testsuite for glibc/rv32 port

2018-09-19  Kito Cheng  <kito@andestech.com>
ld/
       * emulparams/elf32lriscv.sh: Correct the library search path.
       * emulparams/elf32lriscv_ilp32.sh: Likewise.
       * emulparams/elf32lriscv_ilp32f.sh: Likewise.


[1] https://github.com/riscv/riscv-gcc/blob/riscv-gcc-8.1.0/gcc/config/riscv/t-linux