lib: cosmetic update of CONFIG_LIB_ELF description

Change 2 typo error in CONFIG_LIB_ELF description:
- Supoort => Support
- fir => for

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/lib/Kconfig b/lib/Kconfig
index a704568..88c43a3 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -695,8 +695,8 @@
 config LIB_ELF
 	bool
 	help
-	  Supoort basic elf loading/validating functions.
-	  This supports fir 32 bit and 64 bit versions.
+	  Support basic elf loading/validating functions.
+	  This supports for 32 bit and 64 bit versions.
 
 endmenu