Convert CONFIG_TRACE to Kconfig

This converts the following to Kconfig:
   CONFIG_TRACE

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/cmd/Kconfig b/cmd/Kconfig
index f6e7cd4..8744cec 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -1905,7 +1905,7 @@
 	  Enables a command to control using of function tracing within
 	  U-Boot. This allows recording of call traces including timing
 	  information. The command can write data to memory for exporting
-	  for analsys (e.g. using bootchart). See doc/README.trace for full
+	  for analysis (e.g. using bootchart). See doc/README.trace for full
 	  details.
 
 config CMD_AVB