sh.md (movsi_i, movsi_ie, movhi_i, movhi+1): Use type pcload for immediate operands where appropriate.

sh.md (movsi_i, movsi_ie, movhi_i, movhi+1): Use type pcload for
immediate operands where appropriate.
(movsf_ie+1): Fail when loading anything but a MEM into
a floating point reguister.

From-SVN: r13566