riscv: dts: Add ae350_32.dts for RV32I

Add ae350_32.dts for 32 bit. And also rename
ae350.dts to ae350_64.dts for 64 bit.

Signed-off-by: Rick Chen <rick@andestech.com>
Cc: Greentime Hu <greentime@andestech.com>
3 files changed