dt-bindings: arm: qcom: rename vendor of apq8026-lenok

In order to avoid having prefixes for multiple internal divisions of LG
use the "lg" prefix instead of "lge".

Fixes: 21f3cbf6

 ("dt-bindings: arm: qcom: Document APQ8026 SoC binding")
Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Acked-by: David Heidelberg <david@ixit.cz>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210928203815.77175-1-luca@z3ntu.xyz