cmd/internal/obj: pretty-print LSym.Type when debugging
cmd/internal/obj: pretty-print LSym.Type when debugging

We have a stringer for LSym.Type. Use it.

Before:

	"".algarray t=31 size=224

After:

	"".algarray SBSS size=224

Change-Id: Ib4c7d2bc1dbe9943cf2a5dfa5d9f2d7fbd50b7f2
Reviewed-on: https://go-review.googlesource.com/40862
Run-TryBot: Josh Bleecher Snyder <cdc248cc4d32e4fbfe04e45228163bcecd48a0b9@gmail.com>
TryBot-Result: Gobot Gobot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>
Reviewed-by: Brad Fitzpatrick <ae9783c0b0efc69cd85ab025ddd17aa44cdc4aa5@golang.org>

nawawi/go,golang/go,Cofyc/go,Cofyc/go,golang/go,codestation/go,akutz/go,akutz/go,golang/go,nawawi/go,vsekhar/elastic-go,derekmarcotte/go,ImJasonH/go,akutz/go,CAFxX/go,derekmarcotte/go,nawawi/go,akutz/go,derekmarcotte/go,ImJasonH/go,josharian/go,codestation/go,polyverse-security/go,cloudflare/go,josharian/go,nawawi/go,Cofyc/go,cloudflare/go,golang/go,polyverse-security/go,codestation/go,cloudflare/go,Cofyc/go,golang/go,polyverse-security/go,CAFxX/go,cloudflare/go,josharian/go,akutz/go,ImJasonH/go,codestation/go,polyverse-security/go,derekmarcotte/go,akutz/go,vsekhar/elastic-go,derekmarcotte/go,Cofyc/go,codestation/go,cloudflare/go,CAFxX/go,CAFxX/go,vsekhar/elastic-go,nawawi/go,golang/go,derekmarcotte/go,akutz/go,cloudflare/go,golang/go,derekmarcotte/go,ImJasonH/go,codestation/go,polyverse-security/go,CAFxX/go,CAFxX/go,CAFxX/go,CAFxX/go,derekmarcotte/go,vsekhar/elastic-go,cloudflare/go,nawawi/go,vsekhar/elastic-go,josharian/go,josharian/go,codestation/go,ImJasonH/go,ImJasonH/go,ImJasonH/go,vsekhar/elastic-go,Cofyc/go,vsekhar/elastic-go,josharian/go,nawawi/go,josharian/go,vsekhar/elastic-go,nawawi/go,Cofyc/go,polyverse-security/go,akutz/go,ImJasonH/go,josharian/go,polyverse-security/go,Cofyc/go,golang/go,codestation/go,polyverse-security/go,cloudflare/go,christopher-henderson/Go