board_f: Remove adjust_sdram_tbs_8xx() from the init sequence

We can just call this from the only place that needs it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>

include/common.h

@@ -637,7 +637,6 @@ int serial_stub_tstc(struct stdio_dev *sdev);
 
 /* $(CPU)/speed.c */
 int	get_clocks (void);
-int	adjust_sdram_tbs_8xx (void);
 #if defined(CONFIG_MPC8260)
 int	prt_8260_clks (void);
 #elif defined(CONFIG_MPC5xxx)