Fixing build/makefiles

Oppo initial kernel source, doesn't build properly for 12025_release_config

Fixed problem with oppo_trace.o (kernel/panic.c uses is_otrace_on, which can only be found inside oppo_trace.c)
-added oppo_trace.o to be compiled

Fixed problem with function declaration with oppo_trace.c
-used oppo_con_write() function inside arch/arm/mach-msm/oppo_trace.c instead of drivers/tty/vt/vt.c (vt.c's version only activates when CONFIG_OPPO_DEBUG_ASSERT=y,but this variable isn't set in the release config)