OMAP3: id: remove useless strcpy()s

omap3_cpuinfo() is filled with useless strcpy() calls; remove them.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Sanjeev Premi <premi@ti.com>
Tested-by: Igor Grinberg <grinberg@compulab.co.il>
Tested-by: Abhilash Koyamangalath <abhilash.kv@ti.com>