arm64: dts: qcom: sc7280: Fix PMU nodes for Cortex A55 and A78

arm64: dts: qcom: sc7280: Fix PMU nodes for Cortex A55 and A78

The SC7280, SM7325, and QCM6490 platforms feature an 8-core setup
consisting of:
- 1x Kryo 670 Prime (Cortex-A78) / Kryo 670 Gold Plus (Cortex-A78)
- 3x Kryo 670 Gold (Cortex-A78)
- 4x Kryo 670 Silver (Cortex-A55)
(The CPU cores in the SC7280 are simply called Kryo, but are
nevertheless based on the same Cortex A78 and A55).

Use the correct compatibility.

Signed-off-by: Danila Tikhonov <danila@jiaxyga.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Caleb Connolly <caleb.connolly@linaro.org>
Link: https://lore.kernel.org/r/20240818192905.120477-1-danila@jiaxyga.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>