various Kconfig cleanup and old platform build code removal

Signed-off-by: Richard Kuo <rkuo@codeaurora.org>

arch/hexagon/Kconfig

@@ -13,8 +13,8 @@ config HEXAGON
 	# select ARCH_REQUIRE_GPIOLIB
 	# select HAVE_CLK
 	# select IRQ_PER_CPU
-	select HAVE_IRQ_WORK
 	# select GENERIC_PENDING_IRQ if SMP
+	select HAVE_IRQ_WORK
 	select GENERIC_ATOMIC64
 	select HAVE_PERF_EVENTS
 	select HAVE_GENERIC_HARDIRQS
@@ -26,7 +26,7 @@ config HEXAGON
 	select NO_IOPORT
 	select GENERIC_IOMAP
 	select GENERIC_SMP_IDLE_THREAD
-	# mostly generic routines, with some accelerated ones
+	select STACKTRACE_SUPPORT
 	---help---
 	  Qualcomm Hexagon is a processor architecture designed for high
 	  performance and low power across a wide variety of applications.
@@ -73,15 +73,6 @@ config GENERIC_CSUM
 config GENERIC_IRQ_PROBE
 	def_bool y
 
-#config ZONE_DMA
-#	bool
-#	default y
-
-config HAS_DMA
-	bool
-	select HAVE_DMA_ATTRS
-	default y
-
 config NEED_SG_DMA_LENGTH
 	def_bool y
 
@@ -114,14 +105,11 @@ config GENERIC_BUG
 	def_bool y
 	depends on BUG
 
-config BUG
-	def_bool y
-
 menu "Machine selection"
 
 choice
 	prompt "System type"
-	default HEXAGON_ARCH_V2
+	default HEXAGON_COMET
 
 config HEXAGON_COMET
 	bool "Comet Board"
@@ -194,8 +182,7 @@ source "kernel/Kconfig.hz"
 source "kernel/time/Kconfig"
 
 config GENERIC_GPIO
-	bool "Generic GPIO support"
-	default n
+	def_bool n
 
 endmenu
 

arch/hexagon/Makefile

@@ -50,8 +50,3 @@ head-y := arch/hexagon/kernel/head.o
 core-y += arch/hexagon/kernel/ \
 	arch/hexagon/mm/ \
 	arch/hexagon/lib/
-
-#	arch/hexagon/platform/common/
-#
-#core-$(CONFIG_HEXAGON_COMET)		+= arch/hexagon/platform/comet/
-#machine-$(CONFIG_HEXAGON_COMET)		:= comet