Added disassembler support for repe_cmpsw instruction in x86, x86_64

Also included support for repe_cmpsl instruction. This is a follow up to
commit 71311f868e2 which added support for repe_cmpsw in the x86 and
x86_64 assemblers.

Change-Id: I2beac05a57341539acf96cdf77062facd031a864
1 file changed