i40e: Fix for truncated interrupt name

i40e: Fix for truncated interrupt name

Orabug: 22342532

This patch extends the size of the text available for the interrupt names.
Without this patch, all the descriptive data available for the Flow
Director interrupts is truncated.

Change-ID: I2ac458f23ac3b4ea8f1edf73edc283b1d3704c7f
Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
(cherry picked from commit fba52e21e5cad1347255d0d3600f7e4df6e69435)
Signed-off-by: Brian Maly <brian.maly@oracle.com>