Ignore double quotes if present when checking for compiler version

[scaronni]

Ubuntu has compiler strings in the kernel configuration not created in a consistent way:

root@7829fb0730dc:/# grep CONFIG_CC_VERSION_TEXT= /lib/modules/5.15.0-141-generic/build/.config 
CONFIG_CC_VERSION_TEXT="gcc (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0"
root@7829fb0730dc:/# grep CONFIG_CC_VERSION_TEXT= /lib/modules/5.15.0-141-generic/build/include/config/auto.conf
CONFIG_CC_VERSION_TEXT="gcc (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0"

root@7829fb0730dc:/# grep CONFIG_CC_VERSION_TEXT= /lib/modules/6.8.0-60-generic/build/.config 
CONFIG_CC_VERSION_TEXT="x86_64-linux-gnu-gcc-12 (Ubuntu 12.3.0-1ubuntu1~22.04) 12.3.0"
root@7829fb0730dc:/# grep CONFIG_CC_VERSION_TEXT= /lib/modules/6.8.0-60-generic/build/include/config/auto.conf 
CONFIG_CC_VERSION_TEXT=x86_64-linux-gnu-gcc-12 (Ubuntu 12.3.0-1ubuntu1~22.04) 12.3.0

Change the regular expression for matching the kernel versions to ignore the double quotes if they are available.

[anbe42]

perhaps add some example strings as comments to show what is going to be parsed

[scaronni]

Added the comments.

[scaronni]

If there's no other feedback, i'll merge it.

[anbe42]

Nitpicking.