Initialize debuglevel as KERNEL_SEC_DEBUG_LEVEL_LOW.

'debuglevel' is not being properly set yet, which is causing the
qt602240 touchscreen driver to unnecessarily spam key press debugging
to dmesg.  Could be reverted once kernel_sec_debug.c is working fully.

Change-Id: I1d3602dda058f0eac0f96de1de7ed11c44f66688
YPG1: Append recovery bootmode to forced cmdline.

Change-Id: I8b4d4b8aca2159d7b17d07921c6ca70102343d36