socrates: rename sdram_setup fixed_sdram()

This will help us go to a fixed initdram() for all 85xx boards going
forward.  sdram_setup() had an argument that it didn't need, since the
value was #defined.

Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

board/socrates/sdram.c

@@ -39,7 +39,7 @@
  *       so this should be extended for other future boards
  *       using this routine!
  */
-long int sdram_setup(int casl)
+long int fixed_sdram(void)
 {
 	volatile ccsr_ddr_t *ddr = (void *)(CONFIG_SYS_MPC85xx_DDR_ADDR);
 
@@ -85,7 +85,7 @@ phys_size_t initdram (int board_type)
 	dram_size = setup_ddr_tlbs(dram_size / 0x100000);
 	dram_size *= 0x100000;
 #else
-	dram_size = sdram_setup(CONFIG_DDR_DEFAULT_CL);
+	dram_size = fixed_sdram();
 #endif
 	return dram_size;
 }