feat: introduce plat_log_level variable for platforms

This patch allows individual platforms to override the log level
for the build by introducing the 'plat_log_level' variable. For
now, the variable is set to "LOG_LEVEL_INFO" to use the previous
setting.

Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Change-Id: If317a00c7d8971aed7fbfd2178f7eff88736acd1
1 file changed