chore: update .gitattributes

Signed-off-by: Frederic Pillon <frederic.pillon@st.com>

Author: fpistm

.gitattributes

@@ -5,13 +5,16 @@
 # to native line endings on checkout.
 .astyleignore text eol=lf
 .astylerc text eol=lf
+.codespellignore text eol=lf
+.codespellrc text eol=lf
 .editorconfig text eol=lf
 .flake8 text eol=lf
 .gitattributes text eol=lf
 .gitignore text eol=lf
 
 *.adoc text eol=lf
 *.c text eol=lf
+*.cfg text eol=lf
 *.cmake text eol=lf
 *.cpp text eol=lf
 *.css text eol=lf