[S] Change in flashrom[main]: cli_classic: Add option to use first detected chip if multiple found

[Anastasia Klimchuk (Code Review)]

Attention is currently required from: David Hendricks, Matt DeVillier.

Anastasia Klimchuk has posted comments on this change by Matt DeVillier. ( https://review.coreboot.org/c/flashrom/+/85160?usp=email )

Change subject: cli_classic: Add option to use first detected chip if multiple found
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Patch Set 2:

(1 comment)

File cli_classic.c:

https://review.coreboot.org/c/flashrom/+/85160/comment/9e9a871e_3c7edd88?usp... :
PS2, Line 133: 	       "      --use-first-chip              in cases where multiple chips are detected, use the first one found\n"
> The context is very useful, thank you. […]

Hello Matt, just checking, what do you think about all the above?

Purely as an example, an output for `flashrom -p dummy:emulate=MX25L6436 -c "SFDP-capable chip" -VV` has these lines (at the time of writing):

```
Probing for Unknown SFDP-capable chip, 0 kB: SFDP revision = 1.0
SFDP number of parameter headers is 2 (NPH = 1).

SFDP parameter table header 0/1:
  ID 0x00, version 1.0
  Length 36 B, Parameter Table Pointer 0x00001c
Parsing JEDEC flash parameter table... 
  3-Byte only addressing.
  Status register is non-volatile and the standard does not allow vendors to tell us whether EWSR/WREN is needed for status register writes - assuming EWSR.
  Write chunk size is at least 64 B.
  Flash chip size is 8192 kB.
  Block eraser 0: 2048 x 4096 B with opcode 0x20
  Tried to add a duplicate block eraser: 2048 x 4096 B with opcode 0x20.
  Block eraser 1: 256 x 32768 B with opcode 0x52
  Block eraser 2: 128 x 65536 B with opcode 0xd8
done.

SFDP parameter table header 1/1:
  ID 0xc2, version 1.0
  Length 16 B, Parameter Table Pointer 0x000048
Support for SFDP Page with ID 0xc2 not implemented, skipping it.
```