docs: i2c: i2c-protocol: properly name start and stop conditions

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S     (1 bit) : Start bit

P     (1 bit) : Stop bit

S             : Start condition

P             : Stop condition

Rd/Wr (1 bit) : Read/Write bit. Rd equals 1, Wr equals 0.

A, NA (1 bit) : Accept and reverse accept bit.

Addr  (7 bits): I2C 7 bit address. Note that this can be expanded as usual to

This corresponds to i2c_transfer().

They are just like the above transactions, but instead of a stop bit P

a start bit S is sent and the transaction continues. An example of

a byte read, followed by a byte write::

They are just like the above transactions, but instead of a stop

condition P a start condition S is sent and the transaction continues.

An example of a byte read, followed by a byte write::

  S Addr Rd [A] [Data] NA S Addr Wr [A] Data [A] P

      S Addr Rd [A] [Data] NA Data [A] P

    If you set the I2C_M_NOSTART variable for the first partial message,

    we do not generate Addr, but we do generate the startbit S. This will

    probably confuse all other clients on your bus, so don't try this.

    we do not generate Addr, but we do generate the start condition S.

    This will probably confuse all other clients on your bus, so don't

    try this.

    This is often used to gather transmits from multiple data buffers in

    system memory into something that appears as a single transfer to the