riscv: andesv5: Set default cache line size to 64-bytes

The instruction and data cache line sizes of Andes core
are 64-byte. Select SYS_CACHE_SHIFT_6 for RISCV_NDS so
the SYS_CACHELINE_SIZE is enabled with a default value.

Signed-off-by: Yu Chien Peter Lin <peterlin@andestech.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
1 file changed