treewide: replace #include <asm-generic/errno.h> with <linux/errno.h>

Now, include/linux/errno.h is a wrapper of <asm-generic/errno.h>.
Replace all include directives for <asm-generic/errno.h> with
<linux/errno.h>.

<asm-generic/...> is supposed to be included from <asm/...> when
arch-headers fall back into generic implementation. Generally, they
should not be directly included from .c files.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
[trini: Add drivers/usb/host/xhci-rockchip.c]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/drivers/video/exynos/exynos_fb.c b/drivers/video/exynos/exynos_fb.c
index 97228cd..5483d66 100644
--- a/drivers/video/exynos/exynos_fb.c
+++ b/drivers/video/exynos/exynos_fb.c
@@ -27,7 +27,7 @@
 #include <asm/arch/pinmux.h>
 #include <asm/arch/system.h>
 #include <asm/gpio.h>
-#include <asm-generic/errno.h>
+#include <linux/errno.h>
 
 DECLARE_GLOBAL_DATA_PTR;