arm: am57xx: Increase "bootloader" partition size

Increase the size of u-boot.img, so that it conforms with new DFU
configuration (see commit [1]).

[1] 7a53a1a8115b ARM: ti: Update layout for MMC and eMMC (env and dfu)

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Reviewed-by: Tom Rini <trini@konsulko.com>

include/configs/am57xx_evm.h

@@ -46,7 +46,7 @@
 	"partitions_android=" \
 	"uuid_disk=${uuid_gpt_disk};" \
 	"name=xloader,start=128K,size=256K,uuid=${uuid_gpt_xloader};" \
-	"name=bootloader,size=768K,uuid=${uuid_gpt_bootloader};" \
+	"name=bootloader,size=1792K,uuid=${uuid_gpt_bootloader};" \
 	"name=environment,size=128K,uuid=${uuid_gpt_environment};" \
 	"name=misc,size=128K,uuid=${uuid_gpt_misc};" \
 	"name=reserved,size=256K,uuid=${uuid_gpt_reserved};" \