ARM: dts: qcom: msm8974-hammerhead: Add alias for mmc0

Add an alias for the internal storage so it always becomes mmcblk0.

This avoids issues with internal storage becoming mmcblk1 unexpectedly
and aligns this board with other boards that use MMC storage.

Signed-off-by: Luca Weiss <luca@lucaweiss.eu>
Link: https://lore.kernel.org/r/20250610-msm8974-mmc-alias-v2-2-1d8808478fba@lucaweiss.eu
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

Author: z3ntu

arch/arm/boot/dts/qcom/qcom-msm8974-lge-nexus5-hammerhead.dts

@@ -12,6 +12,7 @@
 	chassis-type = "handset";
 
 	aliases {
+		mmc0 = &sdhc_1;
 		serial0 = &blsp1_uart1;
 		serial1 = &blsp2_uart4;
 	};