[MLIR][TOSA] Fix converting tosa.clamp and tosa.relu to linalg

Tosa to Linalg conversion crashes when input tensor is a float type other than fp32.
Because tosa.clamp and tosa.reluN have fp32 min/max attribute which is converted as arith.constant with the attribute type.
This commit fixes the crash by correctly setting the float constant type from the input tensor.

Reviewed By: eric-k256

Differential Revision: https://reviews.llvm.org/D128630