GitLab

Include the GICv2 makefile in STM32MP1 SP_min makefile, and use
${GICV2_SOURCES} instead of taking drivers/arm/gic files directly.

Change-Id: Ibcaed5b0bd17f6d8cf200e208c11cc10cd6d2ee5
Signed-off-by: Yann Gautier <yann.gautier@st.com>