lib/cbfs: Use linker symbols over .c include in cbfs.c

Change-Id: Ieb7f383c84401aab87adc833deebf289cd0c9a0f
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/7426
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marc.jones@se-eng.com>
lib/lzma.c: Use header over .c include

Change-Id: I904eb1703eaf4f8de1b4ec443173686c7985be12
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/7427
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Marc Jones <marc.jones@se-eng.com>
Tested-by: build bot (Jenkins)