global: Finish CONFIG -> CFG migration

At this point, the remaining places where we have a symbol that is
defined as CONFIG_... are in fairly odd locations. While as much dead
code has been removed as possible, some of these locations are simply
less obvious at first. In other cases, this code is used, but was
defined in such a way as to have been missed by earlier checks.  Perform
a rename of all such remaining symbols to be CFG_... rather than
CONFIG_...

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/doc/README.davinci b/doc/README.davinci
index 326efa0..f368f99 100644
--- a/doc/README.davinci
+++ b/doc/README.davinci
@@ -58,7 +58,7 @@
 device specific datasheet before setting up this variable. This information is
 passed to the Linux kernel using the ATAG_REVISION atag.
 
-If "maxcpuclk" is not defined, the configuration CONFIG_DA850_EVM_MAX_CPU_CLK
+If "maxcpuclk" is not defined, the configuration CFG_DA850_EVM_MAX_CPU_CLK
 is used to obtain this information.
 
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