arm64: dts: qcom: eliza-mtp: Fix the debug UART index

arm64: dts: qcom: eliza-mtp: Fix the debug UART index

The Eliza MTP debug UART is QUPv3 WRAP2 SE5. The existing DTS labels it
as uart14, but the serial-engine index for this block is actually 13.

Rename the SoC UART label and pinctrl state to uart13 and update the MTP
alias and node reference accordingly.

Fixes: af20af39fc09 ("arm64: dts: qcom: Introduce Eliza Soc base dtsi")
Fixes: 2a5d4fc6f3f7 ("arm64: dts: qcom: eliza: Enable Eliza MTP board support")
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Abel Vesa <abel.vesa@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260515-eliza-dts-fix-debug-uart-and-more-support-v2-1-5ad3da81b9d3@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>