driver core: platform: set mod_name in driver registration

Pass KBUILD_MODNAME through the driver registration macro so that the
driver core can create the module symlink in sysfs for built-in drivers,
and fixup all callers.

The Rust platform adapter is updated to pass the module name through to
the new parameter.

Tested on qemu with:
- x86 defconfig + CONFIG_RUST
- arm64 defconfig + CONFIG_RUST + CONFIG_CORESIGHT stuff

Examples after this patch:

    /sys/bus/platform/drivers/...
        coresight-itnoc/module		-> coresight_tnoc
        coresight-static-tpdm/module	-> coresight_tpdm
        coresight-catu-platform/module	-> coresight_catu
        serial8250/module		-> 8250
        acpi-ged/module			-> acpi
        vmclock/module			-> ptp_vmclock

Co-developed-by: Rahul Bukte <rahul.bukte@sony.com>
Signed-off-by: Rahul Bukte <rahul.bukte@sony.com>
Signed-off-by: Shashank Balaji <shashank.mahadasyam@sony.com>
Link: https://patch.msgid.link/20260518-acpi_mod_name-v5-4-705ccc430885@sony.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/rust/kernel/platform.rs b/rust/kernel/platform.rs
index d8d48f60b0b9..9b362e0495d3 100644
--- a/rust/kernel/platform.rs
+++ b/rust/kernel/platform.rs
@@ -82,7 +82,9 @@ unsafe impl<T: Driver> driver::RegistrationOps for Adapter<T> {
         }
 
         // SAFETY: `pdrv` is guaranteed to be a valid `DriverType`.
-        to_result(unsafe { bindings::__platform_driver_register(pdrv.get(), module.0) })
+        to_result(unsafe {
+            bindings::__platform_driver_register(pdrv.get(), module.0, name.as_char_ptr())
+        })
     }
 
     unsafe fn unregister(pdrv: &Opaque<Self::DriverType>) {