docs: fix references for ipmi.rst file

As this file got moved, fix references for it.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/b6c1ded590f27198de15b16237509128e55fa810.1588345503.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

MAINTAINERS

@@ -8910,7 +8910,7 @@ M:	Corey Minyard <minyard@acm.org>
 L:	openipmi-developer@lists.sourceforge.net (moderated for non-subscribers)
 S:	Supported
 W:	http://openipmi.sourceforge.net/
-F:	Documentation/IPMI.txt
+F:	Documentation/driver-api/ipmi.rst
 F:	Documentation/devicetree/bindings/ipmi/
 F:	drivers/char/ipmi/
 F:	include/linux/ipmi*

drivers/char/ipmi/Kconfig

@@ -14,7 +14,7 @@ menuconfig IPMI_HANDLER
 	  IPMI is a standard for managing sensors (temperature,
 	  voltage, etc.) in a system.
 
-	  See <file:Documentation/IPMI.txt> for more details on the driver.
+	  See <file:Documentation/driver-api/ipmi.rst> for more details on the driver.
 
 	  If unsure, say N.
 

drivers/char/ipmi/ipmi_si_hotmod.c

@@ -18,7 +18,7 @@ static int hotmod_handler(const char *val, const struct kernel_param *kp);
 
 module_param_call(hotmod, hotmod_handler, NULL, NULL, 0200);
 MODULE_PARM_DESC(hotmod, "Add and remove interfaces.  See"
-		 " Documentation/IPMI.txt in the kernel sources for the"
+		 " Documentation/driver-api/ipmi.rst in the kernel sources for the"
 		 " gory details.");
 
 /*

drivers/char/ipmi/ipmi_si_intf.c

@@ -968,7 +968,7 @@ static inline bool ipmi_thread_busy_wait(enum si_sm_result smi_result,
  * that are not BT and do not have interrupts.  It starts spinning
  * when an operation is complete or until max_busy tells it to stop
  * (if that is enabled).  See the paragraph on kimid_max_busy_us in
- * Documentation/IPMI.txt for details.
+ * Documentation/driver-api/ipmi.rst for details.
  */
 static int ipmi_thread(void *data)
 {