global: Move remaining CONFIG_SYS_* to CFG_SYS_*

The rest of the unmigrated CONFIG symbols in the CONFIG_SYS namespace do
not easily transition to Kconfig. In many cases they likely should come
from the device tree instead. Move these out of CONFIG namespace and in
to CFG namespace.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/Kconfig b/Kconfig
index 67f4646..297281e 100644
--- a/Kconfig
+++ b/Kconfig
@@ -264,8 +264,8 @@
 	default y if TFABOOT
 	help
 	  Typically, we use an initial stack pointer address that is calculated
-	  by taking the statically defined CONFIG_SYS_INIT_RAM_ADDR, adding the
-	  statically defined CONFIG_SYS_INIT_RAM_SIZE and then subtracting the
+	  by taking the statically defined CFG_SYS_INIT_RAM_ADDR, adding the
+	  statically defined CFG_SYS_INIT_RAM_SIZE and then subtracting the
 	  build-time constant of GENERATED_GBL_DATA_SIZE.  On MIPS a different
 	  but statica calculation is performed.  However, some platforms will
 	  take a different approach.  Say Y here to define the address statically
@@ -333,7 +333,7 @@
 	  particular needs this to operate, so that it can allocate the
 	  initial serial device and any others that are needed.
 
-	  It is possible to enable CONFIG_SYS_SPL_MALLOC_START to start a new
+	  It is possible to enable CFG_SYS_SPL_MALLOC_START to start a new
 	  malloc() region in SDRAM once it is inited.
 
 config TPL_SYS_MALLOC_F_LEN