vbe: Rename vbe_fixup to vbe_request

The vbe_fixup file handles device tree fixups, but these are called OS
requests in VBE. Rename the file to reflect its wider purpose.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/boot/Makefile b/boot/Makefile
index dd45d78..19d628d 100644
--- a/boot/Makefile
+++ b/boot/Makefile
@@ -47,5 +47,5 @@
 obj-$(CONFIG_SPL_LOAD_FIT) += common_fit.o
 endif
 
-obj-$(CONFIG_$(SPL_TPL_)BOOTMETH_VBE) += vbe.o vbe_fixup.o
+obj-$(CONFIG_$(SPL_TPL_)BOOTMETH_VBE) += vbe.o vbe_request.o
 obj-$(CONFIG_$(SPL_TPL_)BOOTMETH_VBE_SIMPLE) += vbe_simple.o
diff --git a/boot/vbe_fixup.c b/boot/vbe_request.c
similarity index 98%
rename from boot/vbe_fixup.c
rename to boot/vbe_request.c
index 53d8867..fa01892 100644
--- a/boot/vbe_fixup.c
+++ b/boot/vbe_request.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Verified Boot for Embedded (VBE) device tree fixup functions
+ * Verified Boot for Embedded (VBE) OS request (device tree fixup) functions
  *
  * Copyright 2022 Google LLC
  * Written by Simon Glass <sjg@chromium.org>