[coreboot - Bug #301] (New) soc/amd: gpio_bank_lib.asl: IASL remarks on inefficient creation of named objects

Issue #301 has been reported by Paul Menzel.

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Bug #301: soc/amd: gpio_bank_lib.asl: IASL remarks on inefficient creation of named objects
https://ticket.coreboot.org/issues/301

* Author: Paul Menzel
* Status: New
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
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Building amd/majolica, IASL 20200925 shows the remarks below.

```
dsdt.asl     98:  Name(BUFF, Buffer(Local0) {})
Remark   2173 -          ^ Creation of named objects within a method is highly inefficient, use globals or method local variables instead (_SB.S2BF)

dsdt.asl    188:  OperationRegion (GPDW, SystemMemory, Local0, 4)
Remark   2173 -                      ^ Creation of named objects within a method is highly inefficient, use globals or method local variables instead (_SB.GPRD)

dsdt.asl    201:  OperationRegion (GPDW, SystemMemory, Local0, 4)
Remark   2173 -                      ^ Creation of named objects within a method is highly inefficient, use globals or method local variables instead (_SB.GPWR)

dsdt.asl    298:  OperationRegion (GPDW, SystemMemory, GPAD (Arg0), 4)
Remark   2173 -                      ^ Creation of named objects within a method is highly inefficient, use globals or method local variables instead (_SB.STXS)

dsdt.asl    312:  OperationRegion (GPDW, SystemMemory, GPAD (Arg0), 4)
Remark   2173 -                      ^ Creation of named objects within a method is highly inefficient, use globals or method local variables instead (_SB.CTXS)

dsdt.asl    326:  OperationRegion (GPDW, SystemMemory, GPAD (Arg0), 4)
Remark   2173 -                      ^ Creation of named objects within a method is highly inefficient, use globals or method local variables instead (_SB.GRXS)

dsdt.asl    342:  OperationRegion (GPDW, SystemMemory, GPAD (Arg0), 4)
Remark   2173 -                      ^ Creation of named objects within a method is highly inefficient, use globals or method local variables instead (_SB.GTXS)
```