[RISCV] Add expicit i32/i64 types to RV32 or RV64 only isel patterns. NFC

This stops tablegen from generating patterns with the opposite type
in the opposite HwMode. This just adds wasted bytes to the isel table.

This reduces the isel table by about 1800 bytes.

GitOrigin-RevId: 29b894a8d3ecb83e19899b751d7bd09dba1a6fdc
5 files changed