cmd/link: move ppc64 genplt declarations into loop
cmd/link: move ppc64 genplt declarations into loop

(Split out from CL 22243.)

Change-Id: I07709a0c417e7a57e839e5085a37db7d5fbf3a35
Reviewed-on: https://go-review.googlesource.com/22322
Run-TryBot: David Crawshaw <a2f0bf29257797dd66800b4fbb9945c3e216c004@golang.org>
Reviewed-by: Brad Fitzpatrick <ae9783c0b0efc69cd85ab025ddd17aa44cdc4aa5@golang.org>

goodlang/good,suncycheng/go,derekmarcotte/go,codestation/go,nawawi/go,nawawi/go,ganboing/go-esx,vsekhar/elastic-go,polyverse-security/go,goodlang/good,golang/go,theif519/go,4ad/go,nawawi/go,cloudflare/go,ganboing/go-esx,suncycheng/go,theif519/go,CAFxX/go,josharian/go,ImJasonH/go,ganboing/go-esx,4ad/go,Cofyc/go,theif519/go,nawawi/go,CAFxX/go,Cofyc/go,cloudflare/go,ImJasonH/go,4ad/go,goodlang/good,linux-on-ibm-z/go,momchil-velikov/go,derekmarcotte/go,goodlang/good,akutz/go,codestation/go,derekmarcotte/go,vsekhar/elastic-go,codestation/go,ImJasonH/go,vsekhar/elastic-go,polyverse-security/go,akutz/go,momchil-velikov/go,josharian/go,4ad/go,ImJasonH/go,CAFxX/go,codestation/go,cloudflare/go,josharian/go,golang/go,goodlang/good,linux-on-ibm-z/go,cloudflare/go,polyverse-security/go,vsekhar/elastic-go,polyverse-security/go,cloudflare/go,Cofyc/go,CAFxX/go,momchil-velikov/go,CAFxX/go,akutz/go,polyverse-security/go,polyverse-security/go,golang/go,theif519/go,codestation/go,ImJasonH/go,nawawi/go,ImJasonH/go,akutz/go,momchil-velikov/go,vsekhar/elastic-go,golang/go,Cofyc/go,codestation/go,suncycheng/go,theif519/go,vsekhar/elastic-go,Cofyc/go,suncycheng/go,cloudflare/go,josharian/go,linux-on-ibm-z/go,golang/go,akutz/go,derekmarcotte/go,momchil-velikov/go,linux-on-ibm-z/go,linux-on-ibm-z/go,golang/go,nawawi/go,derekmarcotte/go,ganboing/go-esx,christopher-henderson/Go,derekmarcotte/go,momchil-velikov/go,CAFxX/go,golang/go,akutz/go,josharian/go,polyverse-security/go,linux-on-ibm-z/go,theif519/go,codestation/go,4ad/go,linux-on-ibm-z/go,suncycheng/go,codestation/go,ganboing/go-esx,theif519/go,nawawi/go,suncycheng/go,cloudflare/go,goodlang/good,goodlang/good,akutz/go,josharian/go,polyverse-security/go,4ad/go,suncycheng/go,Cofyc/go,ganboing/go-esx,Cofyc/go,Cofyc/go,ImJasonH/go,cloudflare/go,ImJasonH/go,golang/go,derekmarcotte/go,suncycheng/go,4ad/go,josharian/go,akutz/go,CAFxX/go,nawawi/go,derekmarcotte/go,momchil-velikov/go,ganboing/go-esx,theif519/go,ganboing/go-esx,momchil-velikov/go,CAFxX/go,vsekhar/elastic-go,goodlang/good,linux-on-ibm-z/go,josharian/go,vsekhar/elastic-go,4ad/go