doc: fix broken references

There are numerous broken references to Documentation files (in other
Documentation files, in comments, etc.). These broken references are
caused by typo's in the references, and by renames or removals of the
Documentation files. Some broken references are simply odd.

Fix these broken references, sometimes by dropping the irrelevant text
they were part of.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 854ed5ca..be9370c 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -163,7 +163,7 @@
 			rsdt -- prefer RSDT over (default) XSDT
 			copy_dsdt -- copy DSDT to memory
 
-			See also Documentation/power/pm.txt, pci=noacpi
+			See also Documentation/power/runtime_pm.txt, pci=noacpi
 
 	acpi_rsdp=	[ACPI,EFI,KEXEC]
 			Pass the RSDP address to the kernel, mostly used
@@ -319,7 +319,7 @@
 	amijoy.map=	[HW,JOY] Amiga joystick support
 			Map of devices attached to JOY0DAT and JOY1DAT
 			Format: <a>,<b>
-			See also Documentation/kernel/input/joystick.txt
+			See also Documentation/input/joystick.txt
 
 	analog.map=	[HW,JOY] Analog joystick and gamepad support
 			Specifies type or capabilities of an analog joystick
@@ -408,7 +408,7 @@
 	bttv.radio=	Most important insmod options are available as
 			kernel args too.
 	bttv.pll=	See Documentation/video4linux/bttv/Insmod-options
-	bttv.tuner=	and Documentation/video4linux/bttv/CARDLIST
+	bttv.tuner=
 
 	bulk_remove=off	[PPC]  This parameter disables the use of the pSeries
 			firmware feature for flushing multiple hpte entries
@@ -724,7 +724,7 @@
 
 	elevator=	[IOSCHED]
 			Format: {"cfq" | "deadline" | "noop"}
-			See Documentation/block/as-iosched.txt and
+			See Documentation/block/cfq-iosched.txt and
 			Documentation/block/deadline-iosched.txt for details.
 
 	elfcorehdr=	[IA-64,PPC,SH,X86]
@@ -765,7 +765,7 @@
 	fail_make_request=[KNL]
 			General fault injection mechanism.
 			Format: <interval>,<probability>,<space>,<times>
-			See also /Documentation/fault-injection/.
+			See also Documentation/fault-injection/.
 
 	floppy=		[HW]
 			See Documentation/blockdev/floppy.txt.
@@ -2375,7 +2375,7 @@
 			Format: <integer>
 
 	sonypi.*=	[HW] Sony Programmable I/O Control Device driver
-			See Documentation/sonypi.txt
+			See Documentation/laptops/sonypi.txt
 
 	specialix=	[HW,SERIAL] Specialix multi-serial port adapter
 			See Documentation/serial/specialix.txt.