Blackfin: debug-mmrs: include RSI_PID[4567] MMRs

The documentation is a little iffy as to whether these are actual MMRs,
but reading them on the hardware works, and the previous version of this
logic (the SDH) had PID[4567].  So add it for RSI too.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

arch/blackfin/kernel/debug-mmrs.c

@@ -1337,6 +1337,10 @@ static int __init bfin_debug_mmrs_init(void)
 	D16(RSI_PID1);
 	D16(RSI_PID2);
 	D16(RSI_PID3);
+	D16(RSI_PID4);
+	D16(RSI_PID5);
+	D16(RSI_PID6);
+	D16(RSI_PID7);
 	D16(RSI_PWR_CONTROL);
 	D16(RSI_RD_WAIT_EN);
 	D32(RSI_RESPONSE0);