[MIPS] Cleanup memory managment initialization.

Historically plat_mem_setup did the entire platform initialization.  This
was rather impractical because it meant plat_mem_setup had to get away
without any kind of memory allocator.  To keep old code from breaking
plat_setup was just renamed to plat_setup and a second platform
initialization hook for anything else was introduced.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/sgi-ip32/ip32-setup.c

@@ -87,7 +87,7 @@ void __init ip32_timer_setup(struct irqaction *irq)
 	setup_irq(IP32_R4K_TIMER_IRQ, irq);
 }
 
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
 {
 	board_be_init = ip32_be_init;