[coreboot] #100: flashrom: Change start/end -s and -e to -S and -E, and change erase -E to -e.

[coreboot]

#100: flashrom: Change start/end -s and -e to -S and -E, and change erase -E to
-e.
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   Reporter:  stuge                  |          Owner:  somebody     
       Type:  enhancement            |         Status:  new          
   Priority:  major                  |      Milestone:  flashrom v1.0
  Component:  flashrom               |        Version:               
   Keywords:  usability cli options  |   Dependencies:               
Patchstatus:  patch needs review     |  
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