[target]: Add support for "fastboot reboot" and "fastboot reboot-bootloader" for all targets.

Add recovery partition for msm7630_surf target. Add support for
'adb shell reboot recovery' and 'adb shell reboot bootloader' for
msm7630_surf target. Add 'RESET_CHIP' proc_comm support for all targets.
diff --git a/target/qsd8250_surf/init.c b/target/qsd8250_surf/init.c
index 442854b..dd937a2 100644
--- a/target/qsd8250_surf/init.c
+++ b/target/qsd8250_surf/init.c
@@ -125,6 +125,11 @@
     return LINUX_MACHTYPE;
 }
 
+void reboot_device(unsigned reboot_reason)
+{
+    reboot(reboot_reason);
+}
+
 unsigned check_reboot_mode(void)
 {
     unsigned mode[2] = {0, 0};