usb: dwc3: core: Fix incorrect kernel-doc comment for dwc3_alloc_event_buffers
The kernel-doc comment for dwc3_alloc_event_buffers states that the
function "Allocates @num event buffers", but the function does not have
a @num parameter and only allocates a single event buffer.
Remove the misleading "@num" reference from the brief description to
accurately reflect the function's behavior.
Signed-off-by: Shuping Bu <bushuping007@163.com>
Link: https://patch.msgid.link/20260520055023.2415635-1-bushuping007@163.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>