src/lib: Wrap lines at 80 columns

Fix the following warning detected by checkpatch.pl:

WARNING: line over 80 characters

TEST=Build and run on Galileo Gen2

Change-Id: I5fa3f8e950e2f0c60bd0e8f030342dc8c0469299
Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com>
Reviewed-on: https://review.coreboot.org/18758
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

src/lib/generic_sdram.c

@@ -2,7 +2,8 @@
 
 /* Setup SDRAM */
 #if CONFIG_RAMINIT_SYSINFO
-void sdram_initialize(int controllers, const struct mem_controller *ctrl, void *sysinfo)
+void sdram_initialize(int controllers, const struct mem_controller *ctrl,
+	void *sysinfo)
 #else
 void sdram_initialize(int controllers, const struct mem_controller *ctrl)
 #endif