[Bug 2019435] [NEW] Default initramfs is missing qcom_geni_serial module

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Running Ubuntu 22.04 with the HWE kernel (5.19.0-38-generic
#39~22.04.1-Ubuntu) on a Qualcomm RB5 derived product -
https://developer.qualcomm.com/qualcomm-robotics-rb5-kit

The platform has a USB to serial port that can be used as the Linux
console.  However, this requires the qcom_geni_serial driver to operate.
That driver is available as a built module already, but only on the
rootfs.  It is not included in the initramfs by default.

The problem with this is that the console is activated quite late in
boot, which reduces it's usefulness in debugging kernel/boot issues.
Also, when it finally does come up, the console cannot operate as a
login interface (no login prompt is provided) because the interface is
initialized after systemd is operational.

I can manually add the module to the initramfs by adding
"qcom_geni_serial" to /etc/initramfs-tools/modules and running update-
initramfs, however this is quite inconvenient.  It requires me to remove
the storage from the platform, and modify it on another system.

Given that the default initramfs already contains a large number of
serial drivers, it feels like qcom_geni_serial should be included by
default which would give an optimal "out of the box" experience on a
number of Qualcomm based platforms.

** Affects: initramfs-tools (Ubuntu)
     Importance: Undecided
         Status: New

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Default initramfs is missing qcom_geni_serial module
https://bugs.launchpad.net/bugs/2019435
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