modules: cmsis: move glue code to modules/cmsis

The CMSIS module glue code was part of arch/ directory. Move it to
modules/cmsis, and provide a single entry point for it: cmsis_core.h.
This entry header will include the right CMSIS header (M or A/R).

To make this change possible, CMSIS module Kconfig/CMake are declared as
external, allowing us to add a new Zephyr include directory.

All files including CMSIS have been updated.

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>

soc/arm/nordic_nrf/nrf52/soc.c

@@ -14,11 +14,12 @@
 
 #include <zephyr/kernel.h>
 #include <zephyr/init.h>
-#include <zephyr/arch/arm/aarch32/cortex_m/cmsis.h>
 #include <hal/nrf_power.h>
 #include <soc/nrfx_coredep.h>
 #include <zephyr/logging/log.h>
 
+#include <cmsis_core.h>
+
 #define LOG_LEVEL CONFIG_SOC_LOG_LEVEL
 LOG_MODULE_REGISTER(soc);
 

soc/arm/nordic_nrf/nrf53/soc.c

@@ -14,7 +14,6 @@
 
 #include <zephyr/kernel.h>
 #include <zephyr/init.h>
-#include <zephyr/arch/arm/aarch32/cortex_m/cmsis.h>
 #include <soc/nrfx_coredep.h>
 #include <zephyr/logging/log.h>
 #include <nrf_erratas.h>
@@ -34,6 +33,8 @@
 #endif
 #include <soc_secure.h>
 
+#include <cmsis_core.h>
+
 #define PIN_XL1 0
 #define PIN_XL2 1
 

soc/arm/nordic_nrf/nrf91/soc.c

@@ -14,10 +14,11 @@
 
 #include <zephyr/kernel.h>
 #include <zephyr/init.h>
-#include <zephyr/arch/arm/aarch32/cortex_m/cmsis.h>
 #include <soc/nrfx_coredep.h>
 #include <zephyr/logging/log.h>
 
+#include <cmsis_core.h>
+
 #define LOG_LEVEL CONFIG_SOC_LOG_LEVEL
 LOG_MODULE_REGISTER(soc);