[source] uboot-omap: enable thumb for overo

[LEDE Commits]

lynxis pushed a commit to source.git, branch master:
https://git.lede-project.org/ca8988614c9b42889357e54f37391a0d9676a22b

commit ca8988614c9b42889357e54f37391a0d9676a22b
Author: Alexander Couzens <lynxis at fe80.eu>
AuthorDate: Fri Apr 28 14:27:45 2017 +0200

    uboot-omap: enable thumb for overo
    
    Even it's unknown if it's booting with thumb, because the lack of hardware.
    Enable it for now, so the build succeed, because without thumb it can not fit
    into spl.
    
    Signed-off-by: Alexander Couzens <lynxis at fe80.eu>
---
 .../patches/104-omap3-overo-enable-thumb.patch         | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/package/boot/uboot-omap/patches/104-omap3-overo-enable-thumb.patch b/package/boot/uboot-omap/patches/104-omap3-overo-enable-thumb.patch
new file mode 100644
index 0000000..ca928c9
--- /dev/null
+++ b/package/boot/uboot-omap/patches/104-omap3-overo-enable-thumb.patch
@@ -0,0 +1,18 @@
+Index: u-boot-2017.01/include/configs/omap3_overo.h
+===================================================================
+--- u-boot-2017.01.orig/include/configs/omap3_overo.h
++++ u-boot-2017.01/include/configs/omap3_overo.h
+@@ -11,6 +11,13 @@
+ #define CONFIG_NAND
+ 
+ #include <configs/ti_omap3_common.h>
++
++/* try to enable thumb - unknown if it's working
++ * but otherwise it's too big for spl */
++#ifndef CONFIG_SYS_THUMB_BUILD
++#define CONFIG_SYS_THUMB_BUILD
++#endif
++
+ /*
+  * We are only ever GP parts and will utilize all of the "downloaded image"
+  * area in SRAM which starts at 0x40200000 and ends at 0x4020FFFF (64KB).