[nrf fromlist] samples: subsys: usb: mass: Expand regex

Check more lines on the console to confirm correct
sample operation.

Upstream PR #: 93667

Signed-off-by: Sebastian Głąb <[email protected]>

Author: nordic-segl

samples/subsys/usb/mass/sample.yaml

@@ -25,6 +25,8 @@ tests:
       regex:
         - "No file system selected"
         - "The device is put in USB mass storage mode"
+        - "usbd_msc: Enable"
+        - "usbd_msc: Bulk-Only Mass Storage Reset"
   sample.usbd.mass_ram_fat:
     min_ram: 128
     depends_on: usbd
@@ -72,6 +74,8 @@ tests:
       regex:
         - "End of files"
         - "The device is put in USB mass storage mode"
+        - "usbd_msc: Enable"
+        - "usbd_msc: Bulk-Only Mass Storage Reset"
   sample.usbd.mass_sdhc_fatfs:
     min_ram: 32
     filter: dt_compat_enabled("zephyr,sdmmc-disk")