[Bug 1001184] New: Cortex-m arch: hal_intr.h includes var_intr.h tooearly.

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           Summary: Cortex-m arch: hal_intr.h includes var_intr.h too
                    early.
           Product: eCos
           Version: 3.0
          Platform: All
        OS/Version: Cortex-M
            Status: UNCONFIRMED
          Severity: normal
          Priority: low
         Component: HAL
        AssignedTo: unassigned@bugs.ecos.sourceware.org
        ReportedBy: ilijak@siva.com.mk
                CC: ecos-bugs@ecos.sourceware.org
             Class: Advice Request


Created an attachment (id=1195)
 --> (http://bugs.ecos.sourceware.org/attachment.cgi?id=1195)
Include var_intr.h after definition of hal_intr.h macros but allows overriding
of CYGNUM_HAL_INTERRUPT_RTC.

In Cortex-M architecture, the header hal_intr.h includes var_intr.h twice.
Second one is of course with no effect, but the first one is too early. 
Namely some macros that are defined in hal_intr.h, such as
CYGNUM_HAL_INTERRUPT_EXTERNAL, are used in hal-intr.h. This doesn't seem to
show ill effect so far since usage is by other macros.

Note: The early inclusion of var_intr.h has been introduced by Bug 1001090
Attachment 1092 in order to enable overriding of CYGNUM_HAL_INTERRUPT_RTC by
variant/platform.

The proposed patch includes var_intr.h after definition of hal_intr.h macros
but also allows overriding of CYGNUM_HAL_INTERRUPT_RTC.

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