Rename CONFIG_SYS_TEXT_BASE to CONFIG_TEXT_BASE

The current name is inconsistent with SPL which uses CONFIG_SPL_TEXT_BASE
and this makes it imposible to use CONFIG_VAL().

Rename it to resolve this problem.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/lib/efi_loader/efi_runtime.c b/lib/efi_loader/efi_runtime.c
index 93a695f..ad2ab82 100644
--- a/lib/efi_loader/efi_runtime.c
+++ b/lib/efi_loader/efi_runtime.c
@@ -672,12 +672,12 @@
 	struct elf_rela *rel = (void*)&__efi_runtime_rel_start;
 #else
 	struct elf_rel *rel = (void*)&__efi_runtime_rel_start;
-	static ulong lastoff = CONFIG_SYS_TEXT_BASE;
+	static ulong lastoff = CONFIG_TEXT_BASE;
 #endif
 
 	debug("%s: Relocating to offset=%lx\n", __func__, offset);
 	for (; (ulong)rel < (ulong)&__efi_runtime_rel_stop; rel++) {
-		ulong base = CONFIG_SYS_TEXT_BASE;
+		ulong base = CONFIG_TEXT_BASE;
 		ulong *p;
 		ulong newaddr;
 
@@ -696,7 +696,7 @@
 		switch (rel->info & R_MASK) {
 		case R_RELATIVE:
 #ifdef IS_RELA
-		newaddr = rel->addend + offset - CONFIG_SYS_TEXT_BASE;
+		newaddr = rel->addend + offset - CONFIG_TEXT_BASE;
 #else
 		newaddr = *p - lastoff + offset;
 #endif
@@ -707,7 +707,7 @@
 			extern struct dyn_sym __dyn_sym_start[];
 			newaddr = __dyn_sym_start[symidx].addr + offset;
 #ifdef IS_RELA
-			newaddr -= CONFIG_SYS_TEXT_BASE;
+			newaddr -= CONFIG_TEXT_BASE;
 #endif
 			break;
 		}