u-boot: Build newer version of U-Boot not touching A1CR

UBL is setting up the flash timings (A1CR) and so far U-Boot
was overwriting it with a timing for the EVB development board
of TI. Let UBL define ECC/ChipSelect and the A1CR timings.

This might now cause different kind of flash issues because the
per chip timings might be "wrong". This is why this commit should
needs to stay in testing a bit longer. We should use this commit
on RevC, D, E and F hardware ourselves a bit.

recipes-sysmobts/uboot/u-boot_sysmocom.inc

@@ -1,5 +1,5 @@
 SRC_URI = "git://git.sysmocom.de/sysmo-bts/u-boot;branch=v2011.12;protocol=git"
-SRCREV = "ab8a84d9ac4c9d938ec6fa85e3f4f640d883c774"
+SRCREV = "32c1294d62c134137d4a65b6e9101b1172b60789"
 PV = "v2011.12+git${SRCPV}"
 S = "${WORKDIR}/git"