arm64: dts: qcom: sc7280: Update gpu opp table

On the lite sku where GPU Fmax is 550Mhz, voting for a slightly higher
bandwidth at the highest gpu opp helps to improve "Manhattan offscreen"
score by 10%. Update the gpu opp table such that this is applicable only
on SKUs which has 550Mhz as GPU Fmax.

Signed-off-by: Akhil P Oommen <quic_akhilpo@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220829011035.1.Ie3564662150e038571b7e2779cac7229191cf3bf@changeid