media: staging: davinci_vpfe: disallow building with COMPILE_TEST

commit 49dc762c upstream.

The driver should really call dm365_isif_setup_pinmux() through a callback,
but uses a hack to include a davinci specific machine header file when
compile testing instead. This works almost everywhere, but not on the
ARM omap1 platform, which has another header named mach/mux.h. This
causes a build failure:

drivers/staging/media/davinci_vpfe/dm365_isif.c:2028:2: error: implicit declaration of function 'davinci_cfg_reg' [-Werror,-Wimplicit-function-declaration]
        davinci_cfg_reg(DM365_VIN_CAM_WEN);
        ^
drivers/staging/media/davinci_vpfe/dm365_isif.c:2028:2: error: this function declaration is not a prototype [-Werror,-Wstrict-prototypes]
drivers/staging/media/davinci_vpfe/dm365_isif.c:2028:18: error: use of undeclared identifier 'DM365_VIN_CAM_WEN'
        davinci_cfg_reg(DM365_VIN_CAM_WEN);
                        ^
drivers/staging/media/davinci_vpfe/dm365_isif.c:2029:18: error: use of undeclared identifier 'DM365_VIN_CAM_VD'
        davinci_cfg_reg(DM365_VIN_CAM_VD);
                        ^
drivers/staging/media/davinci_vpfe/dm365_isif.c:2030:18: error: use of undeclared identifier 'DM365_VIN_CAM_HD'
        davinci_cfg_reg(DM365_VIN_CAM_HD);
                        ^
drivers/staging/media/davinci_vpfe/dm365_isif.c:2031:18: error: use of undeclared identifier 'DM365_VIN_YIN4_7_EN'
        davinci_cfg_reg(DM365_VIN_YIN4_7_EN);
                        ^
drivers/staging/media/davinci_vpfe/dm365_isif.c:2032:18: error: use of undeclared identifier 'DM365_VIN_YIN0_3_EN'
        davinci_cfg_reg(DM365_VIN_YIN0_3_EN);
                        ^
7 errors generated.

Exclude omap1 from compile-testing, under the assumption that all others
still work.

Fixes: 4907c73d ("media: staging: davinci_vpfe: allow building with COMPILE_TEST")

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>