global: Remove unused CONFIG defines

Remove some CONFIG symbols and related comments, etc, that are unused
within the code itself at this point.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/cpu/arm1176/start.S b/arch/arm/cpu/arm1176/start.S
index 9e76a4a..78a9cc1 100644
--- a/arch/arm/cpu/arm1176/start.S
+++ b/arch/arm/cpu/arm1176/start.S
@@ -17,10 +17,6 @@
 #include <config.h>
 #include <linux/linkage.h>
 
-#ifndef CONFIG_SYS_PHY_UBOOT_BASE
-#define CONFIG_SYS_PHY_UBOOT_BASE	CFG_SYS_UBOOT_BASE
-#endif
-
 /*
  *************************************************************************
  *
@@ -88,7 +84,7 @@
 
 	/* Prepare to disable the MMU */
 	adr	r2, mmu_disable_phys
-	sub	r2, r2, #(CONFIG_SYS_PHY_UBOOT_BASE - CONFIG_TEXT_BASE)
+	sub	r2, r2, #(CFG_SYS_UBOOT_BASE - CONFIG_TEXT_BASE)
 	b	mmu_disable
 
 	.align 5