fix new3ds clocking when booting from fb3ds (untested)

previously when changing the clock to itself it'd never retrigger the irq and the loader would get stuck in a loop

now, it just returns when trying to set to the current mode

arm11/source/smp.c

@@ -31,6 +31,9 @@ static void wait_cycles(unsigned short cycles)
 
 static void set_clock(short socmode)
 {
+	if (get_pdn_lgr_socmode() == socmode)
+		return;
+
 	set_pdn_lgr_socmode(socmode);
 
 	// Loop until the ACK bit is set.