We're reworking pclntab generation in the linker, and with that we're
moving FuncID generation in to the compiler. Determining the FuncID is
done by a lookup on the package.function name; therefore, we need the
package whenever we make the TEXT symbols.

Change-Id: I805445ffbf2f895f06ce3a91fb09126d012bf86e
Reviewed-on: https://go-review.googlesource.com/c/go/+/245318


Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>