Intel: Replace MSR 0xcd with MSR_FSB_FREQ

And move the corresponding #define to speedstep.h

Change-Id: I8c884b8ab9ba54e01cfed7647a59deafeac94f2d
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/2339
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/cpu/intel/model_1067x/model_1067x_init.c

@@ -99,7 +99,6 @@ static void enable_vmx(void)
 }
 
 #define MSR_BBL_CR_CTL3		0x11e
-#define MSR_FSB_FREQ		0xcd
 
 static void configure_c_states(const int quad)
 {