Config.in: introduce BR2_HOST_GCC_AT_LEAST_{10,11}

Config.in: introduce BR2_HOST_GCC_AT_LEAST_{10,11}

NodeJS 20 requires gcc >= 10.1. Unfortunately, except for
BR2_HOST_GCC_AT_LEAST_4_9, Buildroot only handles host gcc version
with the granularity of the major release, so we will have to round up
to GCC >= 11 for NodeJS 20.

Signed-off-by: Adam Duskett <[email protected]>
Signed-off-by: Thomas Petazzoni <[email protected]>