[MIPS] Deforest the function pointer jungle in the time code.

Hard to follow who is pointing what to where and why so it's simply getting
in the way of the time code renovation.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/lasat/ds1603.c b/arch/mips/lasat/ds1603.c
index 0b315f5..52cb143 100644
--- a/arch/mips/lasat/ds1603.c
+++ b/arch/mips/lasat/ds1603.c
@@ -135,8 +135,7 @@
 	lasat_ndelay(1000);
 }
 
-/* interface */
-unsigned long ds1603_read(void)
+unsigned long read_persistent_clock(void)
 {
 	unsigned long word;
 	unsigned long flags;
@@ -147,10 +146,11 @@
 	word = rtc_read_word();
 	rtc_end_op();
 	spin_unlock_irqrestore(&rtc_lock, flags);
+
 	return word;
 }
 
-int ds1603_set(unsigned long time)
+int rtc_mips_set_mmss(unsigned long time)
 {
 	unsigned long flags;