lenovo: Use readable name as part number.

Part number is used only for coreboot ROM identification and
in coreboot tables. Rather than guessing the P/N, just use readable name.

SMBIOS uses information from EEPROM and so isn't affected.

Change-Id: I33534c3acb83f20d5b493c82bfc98896bf64ff1a
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/7177
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins)
lenovo/{x60,t60}: Change PARTNUMBER for consistency

Change-Id: I0ace5f49b84170ab4701ad1b70d3c50c99066e53
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/7178
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins)
Use spelling LENOVO troughout instead of using Lenovo sometimes

Change-Id: Ia4060831236d72f880eeff6263ada40cf195fb12
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/7180
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins)