While GNU grep supports '\|' when in basic regular expression mode, notReviewed-by: Martin Rodriguez Reboredo <yakoyoku@xxxxxxxxx>
all grep implementations do (notably toybox grep, used to build the
Android kernel, does not). Switching to grep -Ev enables extended
regular expresions which includes support for the '|' operator.
Signed-off-by: Matthew Maurer <mmaurer@xxxxxxxxxx>
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