Fixed build problems when compiling for armv4/armv5

/tmp/ccej9DYL.s:47: Rd and Rm should be different in mla (repeated)
/tmp/ccej9DYL.s:754: Rd and Rm should be different in mla (repeated)
/tmp/ccej9DYL.s:720: Error: bad immediate value for offset (5328)
/tmp/ccej9DYL.s:724: Error: bad immediate value for offset (5316)
/tmp/ccej9DYL.s:725: Error: bad immediate value for offset (5316)

https://github.com/ssvb/tinymembench/issues/1