Blackfin arch: use bfin_read_SWRST() now that BF561 provides it

Signed-off-by: NMike Frysinger <michael.frysinger@analog.com>
Signed-off-by: NBryan Wu <bryan.wu@analog.com>

arch/blackfin/kernel/setup.c

@@ -402,11 +402,7 @@ void __init setup_arch(char **cmdline_p)
 	if (l1_length > L1_DATA_A_LENGTH)
 		panic("L1 data memory overflow\n");
 
-#ifdef BF561_FAMILY
-	_bfin_swrst = bfin_read_SICA_SWRST();
-#else
 	_bfin_swrst = bfin_read_SWRST();
-#endif
 
 	/* Copy atomic sequences to their fixed location, and sanity check that
 	   these locations are the ones that we advertise to userspace.  */