staging: gasket: unify multi-line string

Fix three checkpatch.pl warnings of 'quoted string split across lines'
in gasket_core.c by merging the strings in one line.
Though some strings
are over 80 characters long, fixing this warning is necessary to ease
grep-ing the source for printk.
Signed-off-by: Kaaira Gupta <kgupta@es.iitr.ac.in>
Link: https://lore.kernel.org/r/20200212175826.GA5967@kaaira-HP-Pavilion-NotebookSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/gasket/gasket_core.c

@@ -692,8 +692,7 @@ static bool gasket_mmap_has_permissions(struct gasket_dev *gasket_dev,
 		(vma->vm_flags & (VM_WRITE | VM_READ | VM_EXEC));
 	if (requested_permissions & ~(bar_permissions)) {
 		dev_dbg(gasket_dev->dev,
-			"Attempting to map a region with requested permissions "
-			"0x%x, but region has permissions 0x%x.\n",
+			"Attempting to map a region with requested permissions 0x%x, but region has permissions 0x%x.\n",
 			requested_permissions, bar_permissions);
 		return false;
 	}
@@ -1180,8 +1179,7 @@ static int gasket_open(struct inode *inode, struct file *filp)
 	inode->i_size = 0;
 
 	dev_dbg(gasket_dev->dev,
-		"Attempting to open with tgid %u (%s) (f_mode: 0%03o, "
-		"fmode_write: %d is_root: %u)\n",
+		"Attempting to open with tgid %u (%s) (f_mode: 0%03o, fmode_write: %d is_root: %u)\n",
 		current->tgid, task_name, filp->f_mode,
 		(filp->f_mode & FMODE_WRITE), is_root);
 
@@ -1258,8 +1256,7 @@ static int gasket_release(struct inode *inode, struct file *file)
 	mutex_lock(&gasket_dev->mutex);
 
 	dev_dbg(gasket_dev->dev,
-		"Releasing device node. Call origin: tgid %u (%s) "
-		"(f_mode: 0%03o, fmode_write: %d, is_root: %u)\n",
+		"Releasing device node. Call origin: tgid %u (%s) (f_mode: 0%03o, fmode_write: %d, is_root: %u)\n",
 		current->tgid, task_name, file->f_mode,
 		(file->f_mode & FMODE_WRITE), is_root);
 	dev_dbg(gasket_dev->dev, "Current open count (owning tgid %u): %d\n",