powerpc/boot: Only build CPM code when necessary

As far as I can tell CONFIG_CPM is the right symbol to use to
conditionally compile the cpm-serial.c code.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Michael Ellerman 2017-11-08 22:05:29 +11:00
commit c3bb690dc6
2 changed files with 4 additions and 1 deletions