libcamera: base: Suppress clang-11 compile error on ARM32

Compiling backtrace.cpp for ARM32 produces the following error with the
clang-11 (and later) compiler:

--------------------
../src/libcamera/base/backtrace.cpp:195:12: error: use of SP or PC in the list is deprecated [-Werror,-Winline-asm]
        int ret = unw_getcontext(&uc);
                  ^
/usr/include/arm-linux-gnueabihf/libunwind-common.h:114:29: note: expanded from macro 'unw_getcontext'
                                        ^
/usr/include/arm-linux-gnueabihf/libunwind-arm.h:270:5: note: expanded from macro 'unw_tdep_getcontext'
    "stmia %[base], {r0-r15}"                                           \
    ^
<inline asm>:1:2: note: instantiated into assembly here
        stmia r0, {r0-r15}
--------------------

Suppress this compilation error with a clang-specific pragma around the
offending statements.

Further information about this error can be found at
https://github.com/dotnet/runtime/issues/38652

Bug: https://bugs.libcamera.org/show_bug.cgi?id=136
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Tested-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Naushir Patuck <naush@rasbperrypi.com>
Tested-by: Naushir Patuck <naush@rasbperrypi.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

0 files changed, 0 insertions, 0 deletions