msm: 8064: Support earlyprintk support

Clean up the debug UART config options and add support for
printing early debug messages using lightweight low-level
UART functions.

Change-Id: Ic018393135193f388e94f94fe09df32da839fbb3
Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org>
3 files changed