The regex was a bit too strict in which characters it allowed. Thus,
if e.g. a file name appears in the
BR2_TARGET_ARM_TRUSTED_FIRMWARE_ADDITIONAL_VARIABLES string, it no
longer matches, and we end up with an empty ATF_VARIABLES. This makes
the subsequent grep fail, and the post-image.sh script fails without
any error message (thanks to the -e option).
Simplify the regex to match everything except the closing quotation
mark. Note that Kconfig doesn't allow quotation marks at all inside a
string (even escaped ones), so this regular expression is always OK.
Signed-off-by: Marleen Vos <marleen.vos@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>