_projects: add /tmp ramdisk on big targets

JIRA: RTOS-924

Author: adamgreloch

_projects/armv7a7-imx6ull-evk/rootfs-overlay/etc/rc.psh

@@ -4,6 +4,7 @@ export HOME=/root
 W /bin/bind devfs /dev
 X /sbin/imx6ull-gpio
 W /sbin/dummyfs -m /var -D
+W /sbin/dummyfs -m /tmp -D
 X /sbin/lwip enet:0x02188000:150:PHY:0.2:irq:-5:/dev/gpio5 enet:0x020b4000:152:no-mdio:PHY:0.1:irq:-6:/dev/gpio5
 X /bin/posixsrv
 X /bin/psh

_projects/armv7a9-zynq7000-qemu/rootfs-overlay/etc/rc.psh

@@ -2,6 +2,7 @@
 export PATH=/bin:/sbin:/usr/bin:/usr/sbin
 export HOME=/root
 W /bin/bind devfs /dev
+W /sbin/dummyfs -m /tmp -D
 X /bin/posixsrv
 T /dev/console
 X /linuxrc

_projects/armv7a9-zynq7000-zedboard/rootfs-overlay/etc/rc.psh

@@ -2,5 +2,6 @@
 export PATH=/bin:/sbin:/usr/bin:/usr/sbin
 export HOME=/root
 W /bin/bind devfs /dev
+W /sbin/dummyfs -m /tmp -D
 X /bin/posixsrv
 X /bin/psh

_projects/armv7a9-zynq7000-zturn/rootfs-overlay/etc/rc.psh

@@ -2,4 +2,5 @@
 export PATH=/bin:/sbin:/usr/bin:/usr/sbin
 export HOME=/root
 W /bin/bind devfs /dev
+W /sbin/dummyfs -m /tmp -D
 X /bin/psh

_projects/ia32-generic-pc/rootfs-overlay/etc/rc.psh

@@ -2,6 +2,7 @@
 export PATH=/bin:/sbin:/usr/bin:/usr/sbin
 export HOME=/root
 W /bin/bind devfs /dev
+W /sbin/dummyfs -m /tmp -D
 X /bin/posixsrv
 X /sbin/lwip rtl:0x18:11
 T /dev/console

_projects/ia32-generic-qemu/rootfs-overlay/etc/rc.psh

@@ -2,6 +2,7 @@
 export PATH=/bin:/sbin:/usr/bin:/usr/sbin
 export HOME=/root
 W /bin/bind devfs /dev
+W /sbin/dummyfs -m /tmp -D
 X /bin/posixsrv
 X /sbin/lwip rtl:0x18:11
 T /dev/console

_projects/riscv64-generic-qemu/rootfs-overlay/etc/rc.psh

@@ -2,5 +2,6 @@
 export PATH=/bin:/sbin:/usr/bin:/usr/sbin
 export HOME=/root
 W /bin/bind devfs /dev
+W /sbin/dummyfs -m /tmp -D
 X /bin/posixsrv
 X /bin/psh