auxdisplay: deconfuse configuration

The auxdisplay Kconfig is confusing.  It creates two separate menus
even though the settings are closely related.  Moreover, the options
for setting the boot message depend on CONFIG_PARPORT even though they
are used by drivers that do not.

Clear up the confusion by moving the "Parallel port LCD/Keypad" menu
under auxdisplay where it logically belongs.  Change the boot message
options to depend only on CONFIG_CHARLCD, making them accessible also
when only the HD44780 is selected.

Since the "Parallel port LCD/Keypad" driver now has a new dependency
on CONFIG_AUXDISPLAY, rename its Kconfig symbol and keep the old one
such that make oldconfig will not disable the driver.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>

drivers/auxdisplay/Kconfig

@@ -164,9 +164,7 @@ config ARM_CHARLCD
 	  line and the Linux version on the second line, but that's
 	  still useful.
 
-endif # AUXDISPLAY
-
-menuconfig PANEL
+menuconfig PARPORT_PANEL
 	tristate "Parallel port LCD/Keypad Panel support"
 	depends on PARPORT
 	select CHARLCD
@@ -178,7 +176,7 @@ menuconfig PANEL
 	  compiled as a module, or linked into the kernel and started at boot.
 	  If you don't understand what all this is about, say N.
 
-if PANEL
+if PARPORT_PANEL
 
 config PANEL_PARPORT
 	int "Default parallel port number (0=LPT1)"
@@ -419,8 +417,11 @@ config PANEL_LCD_PIN_BL
 
 	  Default for the 'BL' pin in custom profile is '0' (uncontrolled).
 
+endif # PARPORT_PANEL
+
 config PANEL_CHANGE_MESSAGE
 	bool "Change LCD initialization message ?"
+	depends on CHARLCD
 	default "n"
 	---help---
 	  This allows you to replace the boot message indicating the kernel version
@@ -444,7 +445,13 @@ config PANEL_BOOT_MESSAGE
 	  An empty message will only clear the display at driver init time. Any other
 	  printf()-formatted message is valid with newline and escape codes.
 
-endif # PANEL
+endif # AUXDISPLAY
+
+config PANEL
+	tristate "Parallel port LCD/Keypad Panel support (OLD OPTION)"
+	depends on PARPORT
+	select AUXDISPLAY
+	select PARPORT_PANEL
 
 config CHARLCD
 	tristate "Character LCD core support" if COMPILE_TEST

drivers/auxdisplay/Makefile

@@ -10,4 +10,4 @@ obj-$(CONFIG_CFAG12864B)	+= cfag12864b.o cfag12864bfb.o
 obj-$(CONFIG_IMG_ASCII_LCD)	+= img-ascii-lcd.o
 obj-$(CONFIG_HD44780)		+= hd44780.o
 obj-$(CONFIG_HT16K33)		+= ht16k33.o
-obj-$(CONFIG_PANEL)             += panel.o
+obj-$(CONFIG_PARPORT_PANEL)	+= panel.o