msm: pil-8660: Break off modem code into platform driver

Create a platform driver to manage the modem instead of having a
module that exists for any 8660 device. This allows us to
add platform devices when the modem really exists and not add it
when there isn't a modem preset (e.g. APQ devices).

Change-Id: I7940c6430ded009dd8ea2cae9ffa514f5495d3f3
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
diff --git a/arch/arm/mach-msm/Makefile b/arch/arm/mach-msm/Makefile
index e09e861..8bc0092 100644
--- a/arch/arm/mach-msm/Makefile
+++ b/arch/arm/mach-msm/Makefile
@@ -76,6 +76,7 @@
 obj-$(CONFIG_MSM_PIL_QDSP6V4) += pil-q6v4.o
 obj-$(CONFIG_MSM_PIL_RIVA) += pil-riva.o
 obj-$(CONFIG_MSM_PIL_TZAPPS) += pil-tzapps.o
+obj-$(CONFIG_MSM_PIL_MODEM) += pil-modem.o
 obj-$(CONFIG_ARCH_QSD8X50) += sirc.o
 obj-$(CONFIG_ARCH_FSM9XXX) += sirc-fsm9xxx.o
 obj-$(CONFIG_MSM_FIQ_SUPPORT) += fiq_glue.o