mailbox/omap: remove OMAP1 mailbox driver

There are no existing users for OMAP1 mailbox driver
in kernel. Commit ab6f775 "Removing dead OMAP_DSP"
has cleaned up all the dead code related to the only
possible user, including the creation of the mailbox
platform device.

Remove this stale driver so that the OMAP mailbox
driver can be simplified and streamlined better for
converting to mailbox framework.

Signed-off-by: Suman Anna <s-anna@ti.com>
Acked-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/drivers/mailbox/Kconfig b/drivers/mailbox/Kconfig
index c8b5c13..1ec8f4e 100644
--- a/drivers/mailbox/Kconfig
+++ b/drivers/mailbox/Kconfig
@@ -20,17 +20,8 @@
 	tristate
 	help
 	  This option is selected by any OMAP architecture specific mailbox
-	  driver such as CONFIG_OMAP1_MBOX or CONFIG_OMAP2PLUS_MBOX. This
-	  enables the common OMAP mailbox framework code.
-
-config OMAP1_MBOX
-	tristate "OMAP1 Mailbox framework support"
-	depends on ARCH_OMAP1
-	select OMAP_MBOX
-	help
-	  Mailbox implementation for OMAP chips with hardware for
-	  interprocessor communication involving DSP in OMAP1. Say Y here
-	  if you want to use OMAP1 Mailbox framework support.
+	  driver such as CONFIG_OMAP2PLUS_MBOX. This enables the common OMAP
+	  mailbox framework code.
 
 config OMAP2PLUS_MBOX
 	tristate "OMAP2+ Mailbox framework support"
@@ -44,7 +35,7 @@
 
 config OMAP_MBOX_KFIFO_SIZE
 	int "Mailbox kfifo default buffer size (bytes)"
-	depends on OMAP2PLUS_MBOX || OMAP1_MBOX
+	depends on OMAP2PLUS_MBOX
 	default 256
 	help
 	  Specify the default size of mailbox's kfifo buffers (bytes).