da8xx/hawkboard: Add support for ohci host controller

Also enable the ohci port on hawkboard. These additions result in an
increased u-boot size -- adjust the same accordingly in the board's
config.

Move the usb header for da8xx platforms under arch-davinci.

Signed-off-by: Sughosh Ganu <urwithsughosh@gmail.com>
diff --git a/arch/arm/include/asm/arch-davinci/hardware.h b/arch/arm/include/asm/arch-davinci/hardware.h
index 5267973..6eed6c9 100644
--- a/arch/arm/include/asm/arch-davinci/hardware.h
+++ b/arch/arm/include/asm/arch-davinci/hardware.h
@@ -306,6 +306,7 @@
 
 void lpsc_on(unsigned int id);
 void lpsc_syncreset(unsigned int id);
+void lpsc_disable(unsigned int id);
 void dsp_on(void);
 
 void davinci_enable_uart0(void);