ARM: SPEAr3xx: DT: add shirq node for interrupt multiplexor

shirq layer has been adapted to DT, add corresponding nodes in all
SPEAr3xx variants.

Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
3 files changed