PXA: Rename pxa_dram_init to pxa2xx_dram_init

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
diff --git a/arch/arm/include/asm/arch-pxa/pxa.h b/arch/arm/include/asm/arch-pxa/pxa.h
index 050b3cd..49c6552 100644
--- a/arch/arm/include/asm/arch-pxa/pxa.h
+++ b/arch/arm/include/asm/arch-pxa/pxa.h
@@ -24,6 +24,6 @@
 
 int cpu_is_pxa25x(void);
 int cpu_is_pxa27x(void);
-void pxa_dram_init(void);
+void pxa2xx_dram_init(void);
 
 #endif	/* __PXA_H__ */