arm: irq: fail build if IRQ_CONNECT is used with ZLI

Commit 3b8e1fa8 updated the documentation
to mention explicitly that ZLI must be registered using IRQ_DIRECT_CONNECT.

Update the ARM IRQ macros such that attempts to register a ZLI using
IRQ_CONNECT becomes a build failure instead of silently succeeding.

Signed-off-by: Mathieu Choplain <mathieu.choplain@st.com>