fix(mouse): USB and trackpad fixes.

* Enable composite USB device automatically, tweak the
  various default sizes.
* Don't set the default trackpad logical/physical sizes.

app/src/mouse/Kconfig

@@ -5,7 +5,7 @@ menuconfig ZMK_MOUSE
     bool "Mouse Emulation"
     select INPUT
     select INPUT_THREAD_PRIORITY_OVERRIDE
-
+    select USB_COMPOSITE_DEVICE if ZMK_USB
 
 if ZMK_MOUSE
 
@@ -18,16 +18,17 @@ endif
 
 config ZMK_TRACKPAD
     bool "Trackpad support"
+    select ENABLE_HID_INT_OUT_EP if ZMK_USB
 
 if ZMK_TRACKPAD
 
 if ZMK_USB
 
-config HID_INTERRUPT_EP_MPS
-    default 320
+config USB_REQUEST_BUFFER_SIZE
+    default 512
 
-config ENABLE_HID_INT_OUT_EP
-    default y
+config HID_INTERRUPT_EP_MPS
+    default 64
 
 endif
 
@@ -37,19 +38,15 @@ config ZMK_TRACKPAD_FINGERS
 
 config ZMK_TRACKPAD_LOGICAL_X
     int "Logical X"
-    default 256
 
 config ZMK_TRACKPAD_LOGICAL_Y
     int "Logical Y"
-    default 256
 
 config ZMK_TRACKPAD_PHYSICAL_X
     int "Physical X"
-    default 256
 
 config ZMK_TRACKPAD_PHYSICAL_Y
     int "Physical Y"
-    default 256
 
 endif # ZMK_TRACKPAD