MSM8974PRO is commonly used for referring to Snapdragon 801, compared to
MSM8974 which is Snapdragon 800.

The Snapdragon 801 has three variants with different clock speeds, with
the -AA, -AB and -AC suffix.

Adjust the names in socinfo to reflect this.
Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220415195449.617040-1-luca@z3ntu.xyz