hw/timer/i8254: rename pit_init() -> i8254_pit_init()

and remove the old i386/pc dependency

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
diff --git a/hw/mips/mips_r4k.c b/hw/mips/mips_r4k.c
index 3bbb182..58d7bac 100644
--- a/hw/mips/mips_r4k.c
+++ b/hw/mips/mips_r4k.c
@@ -272,7 +272,7 @@
 
     rtc_init(isa_bus, 2000, NULL);
 
-    pit = pit_init(isa_bus, 0x40, 0, NULL);
+    pit = i8254_pit_init(isa_bus, 0x40, 0, NULL);
 
     serial_hds_isa_init(isa_bus, 0, MAX_SERIAL_PORTS);