msm: pil-pronto: Add support for error services ready interrupt

Set up the "error services ready" IRQ so that the subsystem
framework can check for this indication as a boot up requirement
for WCNSS.

Change-Id: I3acf87a71478e9fa3fe0fae44013d31602ccaec4
Signed-off-by: Sameer Thalappil <sameert@codeaurora.org>