Revert "pico_defconfig: slimmer zImage size, by disabling"

This reverts commit 1fbb5f37851d6ff4a1d40d91e71d39ac107cd8c4.

Conflicts:
	arch/arm/configs/pico_defconfig
pico_defconfig: enable aw3som3

Change-Id: Ie2871af1749035cb741d7ce8fc551b6f9ac82a96

Conflicts:
	arch/arm/configs/pico_defconfig
aw3som3: set msm_nand_data.parts later

the actual table's used from msm_nand_data.parts. Till now, it was being set, and msm_nand_partitions modified later. It worked (no idea why(?)), but for safety, let's put things to place.