tracing: trace_printk() fix, move format array to data section

Impact: fix kernel crash when using trace_printk()

trace_printk_fmt section is defined into the readonly section.
But we do:

	trace_printk_fmt = fmt;

to fill in that table of format strings - which is not read-only.
Under CONFIG_DEBUG_RODATA=y this crashes ...

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <1236356510-8381-5-git-send-email-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

include/asm-generic/vmlinux.lds.h

@@ -98,6 +98,7 @@
 	VMLINUX_SYMBOL(__stop___tracepoints) = .;			\
 	LIKELY_PROFILE()		       				\
 	BRANCH_PROFILE()						\
+	TRACE_PRINTKS()							\
 	FTRACE_EVENTS()
 
 #define RO_DATA(align)							\
@@ -108,7 +109,6 @@
 		*(__vermagic)		/* Kernel version magic */	\
 		*(__markers_strings)	/* Markers: strings */		\
 		*(__tracepoints_strings)/* Tracepoints: strings */	\
-		TRACE_PRINTKS()					\
 	}								\
 									\
 	.rodata1          : AT(ADDR(.rodata1) - LOAD_OFFSET) {		\