Unify GPIO driver binary names to 'gpio_drv'

Introduce 'gpio' SPEC variable to easily support a corresponding driver within
run scripts.

base/mk/spec-platform_imx53.mk

@@ -5,7 +5,7 @@
 #
 
 # denote wich specs are also fullfilled by this spec
-SPECS += cortex_a8 imx53 imx
+SPECS += cortex_a8 imx53 imx gpio
 
 # add repository relative include paths
 REP_INC_DIR += include/platform/imx53

base/mk/spec-platform_panda.mk

@@ -1,7 +1,7 @@
 #
 # Enable peripherals of the platform
 #
-SPECS += omap4 usb cortex_a9 tl16c750 platform_panda framebuffer
+SPECS += omap4 usb cortex_a9 tl16c750 platform_panda gpio framebuffer
 
 #
 # Pull in CPU specifics

os/run/demo.run

@@ -10,8 +10,8 @@ set build_components {
 	drivers/framebuffer drivers/pci drivers/input
 }
 
-lappend_if [have_spec usb]   build_components drivers/usb
-lappend_if [have_spec imx53] build_components drivers/gpio
+lappend_if [have_spec usb]  build_components drivers/usb
+lappend_if [have_spec gpio] build_components drivers/gpio
 
 build $build_components
 
@@ -61,7 +61,7 @@ append_if [have_spec framebuffer] config {
 		<provides><service name="Framebuffer"/></provides>
 	</start>}
 
-append_if [have_spec imx53] config {
+append_if [have_spec gpio] config {
 	<start name="gpio_drv">
 		<resource name="RAM" quantum="4M"/>
 		<provides><service name="Gpio"/></provides>
@@ -115,7 +115,7 @@ lappend_if [have_spec pci]         boot_modules pci_drv
 lappend_if [have_spec ps2]         boot_modules ps2_drv
 lappend_if [have_spec framebuffer] boot_modules fb_drv
 lappend_if [have_spec usb]         boot_modules usb_drv
-lappend_if [have_spec imx53]       boot_modules gpio_drv
+lappend_if [have_spec gpio]        boot_modules gpio_drv
 
 build_boot_image $boot_modules
 

os/run/gpio_drv.run

@@ -42,7 +42,7 @@ append config {
 		<resource name="RAM" quantum="1M"/>
 		<provides><service name="Timer"/></provides>
 	</start>
-	<start name="omap4_gpio_drv">
+	<start name="gpio_drv">
 		<resource name="RAM" quantum="1M"/>
 		<provides><service name="Gpio"/></provides>
 		<config>
@@ -66,7 +66,7 @@ install_config $config
 set boot_modules {
 	core init
 	timer
-	omap4_gpio_drv
+	gpio_drv
 	test-omap4_gpio_drv
 }
 

os/src/drivers/gpio/omap4/target.mk

@@ -1,4 +1,4 @@
-TARGET   = omap4_gpio_drv
+TARGET   = gpio_drv
 REQUIRES = omap4
 SRC_CC   = main.cc
 LIBS     = base