Allow editorconfig to be used while coding

The current .editorconfig does not set up the editor to the formatting used in the code files, and it is stated that this is to prevent conflict with formatter. The conflict isn't in the .editorconfig, it's in the use of .editorconfig as a formating check at the same time as clang-format.

This change enables .editorconfig to be used by the editor, and disables the check for code files, which resolves the conflict.

Signed-off-by: Emil Ohlsson emil.ohlsson@arm.com