p1-common: load zram as external module

also, create a user interface to change zram options

Signed-off-by: Humberto Borba <humberos@gmail.com>
Change-Id: I9eead93540e1a225e7341175689df7d515fa564c
p1-common: init: fix zram dependencies

added missed modules

<4>[    6.936919] zram: Unknown symbol zs_unmap_object (err 0)
<4>[    6.936962] zram: Unknown symbol lzo1x_decompress_safe (err 0)
<4>[    6.936975] zram: Unknown symbol lzo1x_1_compress (err 0)
<4>[    6.937034] zram: Unknown symbol lz4_compress (err 0)
<4>[    6.937048] zram: Unknown symbol zs_create_pool (err 0)
<4>[    6.937074] zram: Unknown symbol zs_free (err 0)
<4>[    6.937092] zram: Unknown symbol lz4_decompress_unknownoutputsize (err 0)
<4>[    6.937110] zram: Unknown symbol zs_malloc (err 0)
<4>[    6.937119] zram: Unknown symbol zs_get_total_size_bytes (err 0)
<4>[    6.937130] zram: Unknown symbol zs_destroy_pool (err 0)
<4>[    6.937149] zram: Unknown symbol zs_map_object (err 0)

Signed-off-by: Humberto Borba <humberos@gmail.com>
Change-Id: I82392c834ff37de319bb94e20bbaa18e3619abf7